作者机构：
[Chang, Wen-Bin] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOS, Wuhan, Peoples R China.
通讯机构：
[Chang, WB ] C;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.
摘要：
In this study, we utilize the complexity-action duality to study the evolution of complexity in a holographic QCD model at finite temperature and chemical potential. By inserting a fundamental string as a probe, we investigated the properties of complexity growth in this Einstein-Maxwell-scalar gravity system, which is affected by the string velocity, chemical potential, and temperature. Our results show that the complexity growth is maximized when the probe string is stationary, and it decreases as the velocity of the string increases. When the string approaches relativistic velocities, the complexity growth always increases monotonically with respect to the chemical potential. Furthermore, we find that the complexity growth can be used to identify phase transitions and crossovers in the model.
摘要：
In this paper, we construct a bounce inflation cosmological scenario in the framework of the modified symmetric teleparallel gravity, namely f(Q) theory, and investigate the tensor perturbations therein. As is well-known, the tensor perturbations generated in the very early Universe (inflation and pre-inflation regions) can account for the primordial gravitational waves (PGWs) that are to be detected by the next generation of GW experiments. We discuss the stability condition of the tensor perturbations in the bounce inflation process and investigate in detail the evolution of the perturbation variable. The general form of the tensor power spectrum is obtained both for large as well as small scale modes. As a result, we show both kinds of modes (short or long wavelength modes), and the tensor spectrum may get a positive tilt in the parametric range where the tensor perturbation proves to be stable-this interestingly hints an enhancement of gravitational waves' amplitude in the background of the f(Q) bounce-inflation scenario. Moreover, we study the LQC-like scenario as a specific case of our model, in which, the primordial tensor power spectrum turns out to be nearly scale-invariant on both small and large scales.
作者机构：
[Chenchen Wei; Yu Zhou; Xiaolong Wang; Huimin Qi; Xiaohui Li; Ting Zou; Wenping Wang; Ze Yang; Ying Yu] Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University, Wuhan, 430079, China
通讯机构：
[Ze Yang; Ying Yu] I;Institute of Nanoscience and Nanotechnology, College of Physical Science and Technology, Central China Normal University, Wuhan, 430079, China
摘要：
Zinc metal batteries (ZMBs) have received a lot of attention due to their high capacity, proper redox potential and low cost. However, zinc anodes suffer from serious dendritic problems and side reactions, resulting in poor cycling stability of zinc ion batteries. Herein, organic additive trimethyl phosphate (TMP) is introduced into inexpensive ZnSO4 electrolyte to stabilize Zn anode. TMP exhibits bifunctional properties in this cost-effective electrolyte system. It prefers adsorbing on (002) plane of zinc which leads to preferential crystal growth and uniform zinc deposition. Moreover, TMP can reshape the original hydrogen bond network, regulate the solvation structure and inhibit the parasitic reaction generated by water. As a result, the zinc anode with TMP addition could maintain 2000 h at a current density of 0.5 mA cm−2 which is superior to bare zinc anode. When paired with V2O5 cathode, the full cell also shows excellent cyclic performance. Such a low-cost bifunctional additive would offer a strategy for stabilizing Zn plating/stripping behaviors and suppressing side reactions in mild aqueous electrolyte.
作者：
Aaij, R.;Abdelmotteleb, A. S. W.;Beteta, C. Abellan;Abudinen, F.;Ackernley, T.;...
期刊：
Journal of High Energy Physics,2024年(2) ISSN：1029-8479
通讯作者：
Aaij, R
作者机构：
[Ketel, T.; Tuning, N.; Usachov, A.; de Boer, J.; Lukashenko, V.; Galati, M. D.; Heijhoff, K.; Akiba, K.; Aaij, R.; Aaij, R; Snoch, A.; Biolchini, A.; Jans, E.; Greeven, L. M.; Geertsema, R. E.; Pellegrino, A.; Gabriel, E.; Merk, M.; van Veghel, M.; Butter, J. S.; Koppenburg, P.; Soares, M. Senghi; Klaver, S.; Gras, C. Sanchez; Raven, G.; Sole, S. Ferreres; Kostiuk, I.; Schubiger, M.; Hulsbergen, W.] Nikhef Natl Inst Subat Phys, Amsterdam, Netherlands.;[Baptista de Souza Leite, J.; De Freitas Carneiro Da Graca, U.; Massafferri, A.; Cruz Torres, M.; De Miranda, J. M.; Falcao, L. N.; Bediaga, I. B.; Gomes, A.; Torres Machado, D.; dos Reis, A. C.; Santoro, L.] Ctr Brasileiro Pesquisas Fis, Rio De Janeiro, Brazil.;[Lopes, J. H.; Polycarpo, E.; Souza De Paula, B.; Souza De Almeida, F. L.; Gandelman, M.; Rangel, M. S.; Ferreira Rodrigues, F.; Hicheur, A.; Otalora Goicochea, J. M.; Gomes, A.; De Paula, L.; Nasteva, I.; Amato, S.; Meyer Garcia, L.] Univ Fed Rio de Janeiro, Rio De Janeiro, Brazil.;[Wang, Z.; Qu, S.; Qin, N.; Ren, Z.; Tou, D. Y.; Wang, J.; Li, A.; Hu, X.; Song, Y.; Tan, Y.; Gong, G.; Lian, Z.; Kang, Y.; Qi, H. R.; Zhu, X.; Luo, Y.; Yang, D.; Mu, H.; Zeng, M.; Dong, C.; Zhang, L.] Tsinghua Univ, Ctr High Energy Phys, Beijing, Peoples R China.;[Lu, Y.; Li, Y.; Yuan, X.; Sheng, S.; Li, T.; Wang, J.; Chen, S.; Xu, Z.; Tobin, M.; Miao, D.; Jiang, X.; Batsukh, B.; Zou, Q.; Feng, M.; Liu, S.; Xiang, Z.] Inst High Energy Phys IHEP, Beijing, Peoples R China.
摘要：
The first measurement of the Z boson production cross-section at centre-of-mass energy v s = 5.02TeV in the forward region is reported, using pp collision data collected by the LHCb experiment in year 2017, corresponding to an integrated luminosity of 100 +/- 2 pb-1. The production cross-section is measured for final-state muons in the pseudorapidity range 2.0 <. < 4.5 with transverse momentum pT > 20 GeV/c. The integrated cross-section is determined to be sZ.mu+mu- = 39.6 +/- 0.7(stat) +/- 0.6(syst) +/- 0.8(lumi) pb for the di-muon invariant mass in the range 60 < M mu mu < 120 GeV/c2. This result and the differential cross-section results are in good agreement with theoretical predictions at next-to-next-to-leading order in the strong coupling constant. Based on a previous LHCb measurement of the Z boson production cross-section in pPb collisions at v sNN = 5.02TeV, the nuclear modification factor RpPb is measured for the first time at this energy. The measured values are 1.2+0.5 -0.3(stat) +/- 0.1(syst) in the forward region (1.53 < y* mu < 4.03) and 3.6+1.6 -0.9(stat)+/- 0.2(syst) in the backward region (-4.97 < y* mu < -2.47), where y* mu represents the muon rapidity in the centre-of-mass frame.
作者机构：
[Jans, E; van Veghel, M; Hulsbergen, W; Biolchini, A; Koppenburg, P; Galati, M D; Greeven, L M; Merk, M; Lukashenko, V; Heijhoff, K; Pellegrino, A; de Boer, J; Magdalinski, D; Kostiuk, I; Butter, J S; Ketel, T; Sanchez Gras, C; Graziani, G; Kotriakhova, S; Aaij, R; Ferreres Sole, S; Snoch, A; Gabriel, E; Tuning, N; Bizzeti, A; Akiba, K; Geertsema, R E] Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands;[Xu, M; Pagare, B; Grazette, L; Abdelmotteleb, A S W; Muhammad, E; Monk, M; Ward, J A; Paolucci, L; Davidson, A; Wiederhold, A R; Swystun, F; Henderson, R D L; Latham, T; Beck, A; Gershon, T; Graziani, G; Kotriakhova, S; Ramos Pernas, M; Blake, T; Cicala, M F; Bizzeti, A; Jones, T P; Vesterinen, M; Hunter, R J; Back, J J; Kreps, M; Abudinén, F] Department of Physics, University of Warwick, Coventry, United Kingdom;[Mathad, A; Bezshyiko, Ia; Owen, P; Serra, N; Buonaura, A; Andersson, M; Bellee, V; Wang, Z; Steinkamp, O; Abellan Beteta, C; Andreola, P; Müller, K; Esen, S; Ferrillo, M; Denysenko, V; Graziani, G; Kotriakhova, S; Lancierini, D; Craik, D C; De Simone, D; Eschle, J; Bernet, R; Bizzeti, A; Terentev, A; Manzari, C A; Betancourt, C] Physik-Institut, Universität Zürich, Zürich, Switzerland;[Hennessy, K; Ackernley, T; Chadwick, A J; Harrison, T; Bowcock, T J V; Hutchcroft, D; Brown, J; Naik, P; Chavez Barajas, C A; Howarth, N; Farry, S; Vilella Figueras, E; Rinnert, K; Marshall, P J; Shears, T; Graziani, G; Kotriakhova, S; Halewood-Leagas, T; Hammerich, J; Casse, G; Bizzeti, A; Scherl, S; Rodrigues, E] Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom;[Prouve, C; López Soliño, S; Rodriguez Rodriguez, E; Gallas Torreira, A; Vazquez Regueiro, P; Lomba Castro, J; Rodriguez Fernandez, E; Baladron Rodriguez, P; Fernandez Gomez, M; Vázquez Sierra, C; Corredoira, I; Romero Lamas, M; Chobanova, V; Adeva, B; Brossa Gonzalo, A; Casais Vidal, A; Cid Vidal, X; Pereiro Castro, A; Cambon Bouzas, J; Santamarina Rios, C; Plo Casasus, M; Dalseno, J; Novoa Fernandez, J; Gioventù, A; Graziani, G; Kotriakhova, S; Brea Rodriguez, A; Sellam, S; Carcedo Salgado, L; Romero Vidal, A; Van Hulse, C B; Belin, S; Garcia Plana, B; Eirea Orro, C; Bizzeti, A; Martinez Santos, D; Saborido Silva, J J; Ruiz Fernandez, R A; Landesa Gomez, C; Morcillo Gomez, A] Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
摘要：
The decay-time-dependent CP asymmetry in B_{s}^{0}→J/ψ(→μ^{+}μ^{-})K^{+}K^{-} decays is measured using proton-proton collision data, corresponding to an integrated luminosity of 6 fb^{-1}, collected with the LHCb detector at a center-of-mass energy of 13TeV. Using a sample of approximately 349 000 B_{s}^{0} signal decays with an invariant K^{+}K^{-} mass in the vicinity of the ϕ(1020) resonance, the CP-violating phase ϕ_{s} is measured, along with the difference in decay widths of the light and heavy mass eigenstates of the B_{s}^{0}-B[over ¯]_{s}^{0} system, ΔΓ_{s}, and the difference of the average B_{s}^{0} and B^{0} meson decay widths, Γ_{s}-Γ_{d}. The values obtained are ϕ_{s}=-0.039±0.022±0.006 rad, ΔΓ_{s}=0.0845±0.0044±0.0024 ps^{-1}, and Γ_{s}-Γ_{d}=-0.0056_{-0.0015}^{+0.0013}±0.0014 ps^{-1}, where the first uncertainty is statistical and the second systematic. These are the most precise single measurements to date and are consistent with expectations based on the Standard Model and with the previous LHCb analyses of this decay. These results are combined with previous independent LHCb measurements. The phase ϕ_{s} is also measured independently for each polarization state of the K^{+}K^{-} system and shows no evidence for polarization dependence.
摘要：
Due to its controllable maneuverability, wide coverage, and low cost, unmanned aerial vehicle (UAV) has great potential in post-disaster rescue, cargo transport and emergency communication. Considering its limited onboard energy, energy -efficient UAV communication is a challenge. This research examines the security of simultaneous wireless information and power transfer (SWIPT) systems assisted by intelligent reflecting surfaces (IRS) and UAVs while considering the flight energy of rotary-wing UAVs. Specifically, an IRS is mounted on a UAV to enhance the quality of legitimate transmission, and artificial noise (AN) is introduced into the base station (BS) to reduce eavesdropping quality. The power splitting (PS) technology is adopted at ground devices (GDs) to simultaneously decode information and harvest energy. First, we jointly design the BS transmit beamforming, UAV-IRS phase shifts and trajectory/velocity as well as GDs PS ratio with the aim of maximizing the sum secrecy rate of all GDs. Then, an iterative algorithm is developed to address the formulated problem. In particular, additional variables are introduced to handle this complicated objective function, and the original problem is decoupled into multiple sub-problems, which can be solved alternately by invoking the successive convex approximation (SCA) and semidefinite relaxation (SDR) techniques. Finally, numerical results demonstrate that the proposed scheme exhibits a substantial performance in the security rate of SWIPT systems assisted by UAV-IRS, and its performance is improved by at least 12% compared to benchmark schemes at the flight energy budget e(thr) = 5KJ and the number of reflecting elements N-r = 25.
期刊：
EUROPEAN PHYSICAL JOURNAL PLUS,2024年139(3):1-7 ISSN：2190-5444
通讯作者：
Zi-qiang Zhang
作者机构：
[Zi-qiang Zhang] School of Mathematics and Physics, China University of Geosciences, Wuhan, China;[De-fu Hou] Key Laboratory of Quark and Lepton Physics (MOE), Central China Normal University, Wuhan, China
通讯机构：
[Zi-qiang Zhang] S;School of Mathematics and Physics, China University of Geosciences, Wuhan, China
摘要：
Using the AdS/CFT correspondence, we study finite ’t Hooft coupling corrections on the instantaneous energy loss of light quarks within shooting string. We consider the first higher-derivative corrections to the supergravity theory, which are
$$R^4$$
terms in the gravity action. It turns out that the energy loss decreases with decreasing
$$\lambda$$
(’t Hooft coupling constant), in agreement with previous findings of the light quarks energy loss obtained from the jet quenching parameter and stopping distance. In addition, we discuss how the energy loss changes with the shear viscosity to entropy density ratio at strong coupling.
作者机构：
[Jans, E; van Veghel, M; Hulsbergen, W; Biolchini, A; Koppenburg, P; Galati, M D; Greeven, L M; Merk, M; Lukashenko, V; Heijhoff, K; Pellegrino, A; de Boer, J; Schubiger, M; Magdalinski, D; Kostiuk, I; Butter, J S; Ketel, T; Sanchez Gras, C; Graziani, G; Kotriakhova, S; Aaij, R; Ferreres Sole, S; Snoch, A; Gabriel, E; Tuning, N; Bizzeti, A; Akiba, K; Geertsema, R E] Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands;[Xu, M; Pagare, B; Grazette, L; Abdelmotteleb, A S W; Muhammad, E; Monk, M; Ward, J A; Paolucci, L; Davidson, A; Wiederhold, A R; Swystun, F; Henderson, R D L; Latham, T; Beck, A; Gershon, T; Graziani, G; Kotriakhova, S; Ramos Pernas, M; Blake, T; Cicala, M F; Bizzeti, A; Jones, T P; Vesterinen, M; Hunter, R J; Back, J J; Kreps, M; Abudinén, F] Department of Physics, University of Warwick, Coventry, United Kingdom;[Mathad, A; Bezshyiko, Ia; Owen, P; Serra, N; Buonaura, A; Andersson, M; Bellee, V; Wang, Z; Steinkamp, O; Abellan Beteta, C; Andreola, P; Müller, K; Esen, S; Ferrillo, M; Denysenko, V; Graziani, G; Kotriakhova, S; Lancierini, D; Craik, D C; De Simone, D; Eschle, J; Bernet, R; Bizzeti, A; Terentev, A; Manzari, C A; Betancourt, C] Physik-Institut, Universität Zürich, Zürich, Switzerland;[Hennessy, K; Ackernley, T; Chadwick, A J; Harrison, T; Bowcock, T J V; Hutchcroft, D; Brown, J; Naik, P; Chavez Barajas, C A; Howarth, N; Farry, S; Vilella Figueras, E; Rinnert, K; Marshall, P J; Shears, T; Graziani, G; Kotriakhova, S; Halewood-Leagas, T; Hammerich, J; Casse, G; Bizzeti, A; Scherl, S; Rodrigues, E] Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom;[Prouve, C; López Soliño, S; Rodriguez Rodriguez, E; Gallas Torreira, A; Vazquez Regueiro, P; Lomba Castro, J; Rodriguez Fernandez, E; Baladron Rodriguez, P; Fernandez Gomez, M; Vázquez Sierra, C; Corredoira, I; Romero Lamas, M; Chobanova, V; Adeva, B; Brossa Gonzalo, A; Casais Vidal, A; Cid Vidal, X; Pereiro Castro, A; Cambon Bouzas, J; Santamarina Rios, C; Plo Casasus, M; Dalseno, J; Novoa Fernandez, J; Gioventù, A; Graziani, G; Kotriakhova, S; Brea Rodriguez, A; Sellam, S; Carcedo Salgado, L; Romero Vidal, A; Van Hulse, C B; Belin, S; Garcia Plana, B; Eirea Orro, C; Bizzeti, A; Martinez Santos, D; Mombächer, T; Saborido Silva, J J; Ruiz Fernandez, R A; Landesa Gomez, C; Morcillo Gomez, A] Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
摘要：
A measurement of time-dependent CP violation in the decays of B^{0} and B[over ¯]^{0} mesons to the final states J/ψ(→μ^{+}μ^{-})K_{S}^{0}, ψ(2S)(→μ^{+}μ^{-})K_{S}^{0} and J/ψ(→e^{+}e^{-})K_{S}^{0} with K_{S}^{0}→π^{+}π^{-} is presented. The data correspond to an integrated luminosity of 6 fb^{-1} collected at a center-of-mass energy of sqrt[s]=13 TeV with the LHCb detector. The CP-violation parameters are measured to be S_{ψK_{S}^{0}}=0.717±0.013(stat)±0.008(syst) and C_{ψK_{S}^{0}}=0.008±0.012(stat)±0.003(syst). This measurement of S_{ψK_{S}^{0}} represents the most precise single measurement of the CKM angle β to date and is more precise than the current world average. In addition, measurements of the CP-violation parameters of the individual channels are reported and a combination with the LHCb Run 1 measurements is performed.
期刊：
Microwave and Optical Technology Letters,2024年66(1):e33954- ISSN：0895-2477
通讯作者：
Jin, J
作者机构：
[Ma, Li; Liu, Wei] Tianjin Univ, Sch Microelect, Tianjin, Peoples R China.;[Zhang, Qi-Jun] Carleton Univ, Dept Elect, Ottawa, ON, Canada.;[Jin, Jing] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Peoples R China.;[Zhang, Jianan] Southeast Univ, State Key Lab Millimeter Waves, Nanjing, Peoples R China.
通讯机构：
[Jin, J ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan, Peoples R China.
关键词：
electromagnetic;finite element method;Padé via Arnoldi;single-size simplification
摘要：
Abstract This paper proposes a new Padé via Arnoldi algorithm with single‐size matrix simplification for electromagnetic (EM) fast frequency sweep. New equations are derived to reduce the double‐size system matrix to single‐size system matrix. We also propose a systematic algorithm to calculate S‐parameters using the simplified single‐size system matrix. Using the proposed algorithm, the EM responses can be obtained with the same accuracy while consuming much less time compared with that using the existing double‐size matrix Padé via Lanczos. The proposed algorithm is demonstrated by two microwave examples.
期刊：
EUROPEAN PHYSICAL JOURNAL C,2024年84(3):1-13 ISSN：1434-6044
通讯作者：
Xin-Li Sheng
作者机构：
[Shu-Yun Yang; Yao-Lin Zou; Defu Hou] Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan, China;INFN Sezione di Firenze, Florence, Italy;[Xin-Li Sheng] Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan, China<&wdkj&>INFN Sezione di Firenze, Florence, Italy
通讯机构：
[Xin-Li Sheng] K;Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan, China<&wdkj&>INFN Sezione di Firenze, Florence, Italy
摘要：
Based on the Nambu–Jona–Lasinio (NJL) model, we develop a framework for calculating the spin alignment of vector mesons and applied it to study
$$\phi $$
mesons in a magnetic field. We calculate mass spectra for
$$\phi $$
mesons and observe mass splitting between the longitudinally polarized state and transversely polarized states. The
$$\phi $$
meson in a thermal equilibrium system is preferred to occupy the state with spin
$$\lambda =0$$
than those with spin
$$\lambda =\pm 1$$
, because the former state has a smaller energy. As a consequence, we conclude that the spin alignment will be larger than 1/3 if one measures along the direction of the magnetic field, which is qualitatively consistent with the recent STAR data. Around the critical temperature
$$T_{C}=150~\hbox {MeV}$$
, the positive deviation from 1/3 is proportional to the square of the magnetic field strength, which agrees with the result from the non-relativistic coalescence model. Including the anomalous magnetic moments for quarks will modify the dynamical masses of quarks and thus affect the mass spectra and spin alignment of
$$\phi $$
mesons. The discussion of spin alignment in the NJL model may help us better understand the formation of hadron’s spin structure during the chiral phase transition.
摘要：
This paper proposes a bifunctional linear-to linear polarization converter with a sandwich structure that enables transmissive and reflective polarization conversions in different operating bands, simultaneously. The unit cell of the converter metasurface comprises an S-shaped wire, a dielectric slab, and an S-shaped slot, where the S-shaped wire and slot have complementary structures and a 30 degrees difference in orientation. When an x-polarized electromagnetic wave is incident on the proposed metasurface, most of the transmitted wave is y-polarized in the frequency range of 7.07 GHz to 7.46 GHz, while most of the reflected wave is y-polarized in the frequency range of 16.59 GHz to 16.91 GHz. The physical mechanism underlying these two types of polarization conversions was analyzed based on the surface current, and electric field distributions. Notably, the transmissive polarization conversion was primarily attributed to magnetic resonance, while its reflective counterpart was ascribed to electric resonance. In addition, the Jones vector and Stokes parameters were analyzed thereby elucidating the polarization characteristics of the proposed metasurface. Furthermore, simulation data demonstrated excellent agreement with the measured results of polarization conversion. The designed metasurface will promote subsequent research on bifunctional polarization converters.
期刊：
Photonics Research, 2024, 12 (4): 625, Published Online: Mar. 12, 2024 Copy Citation Text Follow This Article,2024年12(4):625
作者机构：
State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua Universityhttps://ror.org/cve, Beijing , China;Department of Physics, Huazhong Normal University, Wuhan , China;e-mail: gaox@mail.ccnu.edu.cn;Frontier Science Center for Quantum Information, Beijing , China;e-mail: ycliu@tsinghua.edu.cn
关键词：
光学期刊,光学期刊联盟,光学论文,光电资讯,光电社区,光学人物,光学专家,光学实验室,光学文献,编辑出版,光学权威,光学前沿,光学会议,微信智能应答服务,光学资源库,DOI代理注册,高功率激光,High Power Laser Science and Engineer,光子学研究,Photonics Research,中国光学快报,COL,Chinese Optics Letters,光学学报,中国激光,激光与光电子学进展
摘要：
Subnatural-linewidth single photons are of vital importance in quantum optics and quantum information science. According to previous research, it appears difficult to utilize resonance fluorescence to generate single photons with subnatural linewidth. Here we propose a universally applicable approach to generate fluorescent single photons with subnatural linewidth, which can be implemented based on Λ-shape and similar energy structures. Further, the general condition to obtain fluorescent single photons with subnatural linewidth is revealed. The single-photon linewidth can be easily manipulated over a broad range by external fields, which can be several orders of magnitude smaller than the natural linewidth. Our study can be easily implemented in various physical platforms with current experimental techniques and will significantly facilitate the research on the quantum nature of resonance fluorescence and the technologies in quantum information science.
作者机构：
[Liu, Leyuan; Wang, Guangshuai; Liu, Lili; Zhang, Kun; Chen, Jingying] Cent China Normal Univ, Natl Engn Res Ctr Educ Big Data, Wuhan 430079, Peoples R China.;[Liu, Leyuan; Wang, Guangshuai; Liu, Lili; Zhang, Kun; Chen, Jingying] Cent China Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Peoples R China.;[Liu, Leyuan; Yao, Xinyu; Wang, Guangshuai; Liu, Lili; Zhang, Kun; Chen, Jingying] Cent China Normal Univ, Fac Artificial Intelligence Educ, Wuhan 430079, Peoples R China.;[Ling, Yutao; Ling, YT] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
通讯机构：
[Ling, YT ; Wang, GS ] C;Cent China Normal Univ, Natl Engn Res Ctr Educ Big Data, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Natl Engn Res Ctr E Learning, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Fac Artificial Intelligence Educ, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.
关键词：
virtual reality;autism spectrum disorder;safety skills;skills training
摘要：
In recent years, virtual reality technology, which is able to simulate real-life environments, has been widely used in the field of intervention for individuals with autism and has demonstrated distinct advantages. This review aimed to evaluate the impact of virtual reality technology on safety skills intervention for individuals with autism. After searching and screening three databases, a total of 20 pertinent articles were included. There were six articles dedicated to the VR training of street-crossing skills for individuals with autism, nine articles focusing on the training of driving skills for individuals with ASD, and three studies examining the training of bus riding for individuals with ASD. Furthermore, there were two studies on the training of air travel skills for individuals with ASD. First, we found that training in some complex skills (e.g., driving skills) should be selected for older, high-functioning individuals with ASD, to determine their capacity to participate in the training using scales or questionnaires before the intervention; VR devices with higher levels of immersion are not suitable for younger individuals with ASD. Second, VR is effective in training safety skills for ASD, but there is not enough evidence to determine the relationship between the level of VR immersion and intervention effects. Although the degree of virtual reality involvement has an impact on the ability of ASD to be generalized to the real world, it is important to ensure that future virtual reality settings are realistic and lifelike. Again, adaptive models that provide personalized training to individuals with ASD in VR environments are very promising, and future research should continue in this direction. This paper also discusses the limitations of these studies, as well as potential future research directions.
摘要：
Non-profit sports organizations increasingly participate in government service procurement, seeking vital resources. This study conducted interviews with staff members of sports non-profit organizations in the central provinces of China to understand the impact of participating in government service procurement on non-profit sports organizations. The data was analyzed using NVivo12 software, in conjunction with Resource Dependency Theory (RDT) to propose three subject categories relevant to the subjects of this study, namely (a) resources obtained by the organisation, (b) attitudes of the organisation towards the government and (c) specific behaviours taken by the organisation. The -'government-public duality' of sports non-profit organisations in China makes the government purchase of services, not a fully marketable option. Organizations exhibit proactive behaviors beyond contractual obligations to nurture relationships. This study emphasizes the need to prevent the alienation of non-profit sports organizations in government service procurement, underscoring the importance of fostering and enhancing collaboration in the sports field.
摘要：
Stochastic resonance and energy consumption are significant for information processing and transmission in the neural system. In this paper, we constructed an excitatory–inhibitory cortical neuronal network to investigate the response of the system to weak signals and the corresponding energy consumption. The findings indicate that the excitability of neurons modulates the performance of signal response. Furthermore, the performance of signal response exhibits a bell-shaped dependence on ion channel noise, which is a typical manifestation of the stochastic resonance phenomenon. Stochastic resonance also exists in the network with increasing noise at different excitatory coupling strengths and inhibitory coupling strengths. Furthermore, it is found that the neuronal system obtains optimal transmission of the weak signal at a lower energy consumption. It illustrates that there is a certain economy and efficiency in the signal transmission. At weak inhibitory coupling strength, an optimal excitatory coupling strength exists to allow the neuronal network to make the optimal transmission of the weak signal. However, the phenomenon of double resonant peaks occurs at strong inhibitory coupling strength, which is due to the balance of excitatory and inhibitory synaptic currents. Finally, we demonstrated the robustness of the results to network topology and initial conditions. The results of this paper may contribute to the understanding of signal transmission and its energy consumption in cortical networks.
作者机构：
[Jans, E; van Veghel, M; Hulsbergen, W; Biolchini, A; Koppenburg, P; Galati, M D; Greeven, L M; Merk, M; Lukashenko, V; Heijhoff, K; Pellegrino, A; de Boer, J; Schubiger, M; Kostiuk, I; Butter, J S; Ketel, T; Sanchez Gras, C; Graziani, G; Kotriakhova, S; Aaij, R; Ferreres Sole, S; Snoch, A; Gabriel, E; Tuning, N; Bizzeti, A; Akiba, K; Geertsema, R E] Nikhef National Institute for Subatomic Physics, Amsterdam, Netherlands;[Xu, M; Pagare, B; Grazette, L; Abdelmotteleb, A S W; Muhammad, E; Monk, M; Ward, J A; Paolucci, L; Davidson, A; Wiederhold, A R; Swystun, F; Henderson, R D L; Latham, T; Beck, A; Gershon, T; Graziani, G; Kotriakhova, S; Ramos Pernas, M; Kenzie, M; Blake, T; Cicala, M F; Bizzeti, A; Jones, T P; Vesterinen, M; Hunter, R J; Back, J J; Kreps, M; Abudinén, F] Department of Physics, University of Warwick, Coventry, United Kingdom;[Mathad, A; Bezshyiko, Ia; Owen, P; Serra, N; Buonaura, A; Andersson, M; Bellee, V; Wang, Z; Steinkamp, O; Abellan Beteta, C; Andreola, P; Müller, K; Esen, S; Ferrillo, M; Denysenko, V; Graziani, G; Kotriakhova, S; Lancierini, D; Craik, D C; De Simone, D; Eschle, J; Bernet, R; Bizzeti, A; Terentev, A; Manzari, C A; Betancourt, C] Physik-Institut, Universität Zürich, Zürich, Switzerland;[Hennessy, K; Ackernley, T; Chadwick, A J; Harrison, T; Bowcock, T J V; Hutchcroft, D; Brown, J; Naik, P; Chavez Barajas, C A; Howarth, N; Farry, S; Vilella Figueras, E; Rinnert, K; Marshall, P J; Shears, T; Graziani, G; Kotriakhova, S; Halewood-Leagas, T; Hammerich, J; Casse, G; Bizzeti, A; Scherl, S; Rodrigues, E] Oliver Lodge Laboratory, University of Liverpool, Liverpool, United Kingdom;[Prouve, C; López Soliño, S; Rodriguez Rodriguez, E; Gallas Torreira, A; Vazquez Regueiro, P; Lomba Castro, J; Rodriguez Fernandez, E; Baladron Rodriguez, P; Fernandez Gomez, M; Vázquez Sierra, C; Corredoira, I; Romero Lamas, M; Chobanova, V; Adeva, B; Brossa Gonzalo, A; Casais Vidal, A; Cid Vidal, X; Pereiro Castro, A; Cambon Bouzas, J; Santamarina Rios, C; Plo Casasus, M; Dalseno, J; Novoa Fernandez, J; Gioventù, A; Graziani, G; Kotriakhova, S; Brea Rodriguez, A; Sellam, S; Carcedo Salgado, L; Romero Vidal, A; Van Hulse, C B; Belin, S; Garcia Plana, B; Eirea Orro, C; Bizzeti, A; Martinez Santos, D; Mombächer, T; Saborido Silva, J J; Ruiz Fernandez, R A; Landesa Gomez, C] Instituto Galego de Física de Altas Enerxías (IGFAE), Universidade de Santiago de Compostela, Santiago de Compostela, Spain
摘要：
The first observation of the singly Cabibbo-suppressed Ω_{c}^{0}→Ω^{-}K^{+} and Ω_{c}^{0}→Ξ^{-}π^{+} decays is reported, using proton-proton collision data at a center-of-mass energy of 13TeV, corresponding to an integrated luminosity of 5.4 fb^{-1}, collected with the LHCb detector between 2016 and 2018. The branching fraction ratios are measured to be B(Ω_{c}^{0}→Ω^{-}K^{+})/B(Ω_{c}^{0}→Ω^{-}π^{+})=[6.08±0.51(stat)±0.40(syst)]%,B(Ω_{c}^{0}→Ξ^{-}π^{+})/B(Ω_{c}^{0}→Ω^{-}π^{+})=[15.81±0.87(stat)±0.44(syst)±0.16(ext)]%. In addition, using the Ω_{c}^{0}→Ω^{-}π^{+} decay channel, the Ω_{c}^{0} baryon mass is measured to be M(Ω_{c}^{0})=2695.28±0.07(stat)±0.27(syst)±0.30(ext) MeV, improving the precision of the previous world average by a factor of 4.
期刊：
Journal of Materials Chemistry C,2024年 ISSN：2050-7526
通讯作者：
Tang, YW;Shi, Y
作者机构：
[Chen, Mingyue; Tang, Yiwen; Ran, Hongbing; Wu, Tong; Tang, YW] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;[Chen, Junfeng; Shi, Y; Shi, Yun; Zheng, Jiaqian; Li, Xiang] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 201899, Peoples R China.;[Chen, Junfeng; Shi, Y; Shi, Yun] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.;[Wu, Haodi] Huazhong Univ Sci & Technol, WNLO, Wuhan 430074, Peoples R China.;[Wu, Haodi] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China.
通讯机构：
[Shi, Y ; Tang, YW ] C;Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Peoples R China.;Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 201899, Peoples R China.;Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China.
摘要：
Ternary copper halides, such as Cs3Cu2I5, as an emerging class of nontoxic alternatives to lead halide perovskites, have drawn extensive attention in the X-ray detection field due to their efficient self-trapped exciton emissions. However, the light yield far below the theoretical limit seriously hinders the high-resolution X-ray detection application of copper halide scintillators. Herein, Cs3Cu2I5:K+ scintillation films and single crystals with enhanced photoluminescence (PL) and radiation luminescence (RL) were first obtained by adjusting the doping concentration of K+ ions in the 0-8 at% range. The substitution of Cs+ by doping K+ compacted the adjacent [Cu2I5](3-) dimer groups, resulting in a stronger exciton-photon coupling strength. Therefore, Cs3Cu2I5:K+ single crystals exhibited a stronger RL emission under X-ray excitation, and their light output was about 49.6% higher than that of the pure Cs3Cu2I5, with an accelerated scintillation decay time (330 to 241 ns). Benefiting from these advantages, X-ray detectors based on hydrophobic polymethyl methacrylate (PMMA)-coated Cs3Cu2I5:K+ flexible films could deliver a higher X-ray imaging resolution of 11.7 lp mm(-1)@MTF = 0.2 in comparison with the commercial gadolinium oxysulfide (GOS)-based detectors (6.2 lp mm(-1)@MTF = 0.2). This work provides insights for the design of metal halides for use in low-cost and high-resolution flexible X-ray imaging systems.
期刊：
Physica A-Statistical Mechanics and its Applications,2024年637:129533 ISSN：0378-4371
通讯作者：
Liu, FY
作者机构：
[Yang, Chunbin; Liu, Feiyi; Deng, Weibing; Li, Wei; Chen, Xiangna; Liu, FY] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;[Liu, Feiyi; Deng, Weibing; Li, Wei; Liu, FY] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;[Liu, Feiyi; Papp, Gabor; Liu, FY] Eotv Lorand Univ, Inst Phys, 1-A Pazmany P Setany, H-1117 Budapest, Hungary.;[Chen, Shiyang] Baoshan Univ, Sch Engn & Technol, Baoshan 678000, Peoples R China.;[Shen, Jianmin] Max Planck Inst Math Sci, D-04103 Leipzig, Germany.
通讯机构：
[Liu, FY ] C;Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.;Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China.;Eotv Lorand Univ, Inst Phys, 1-A Pazmany P Setany, H-1117 Budapest, Hungary.
摘要：
Machine learning techniques exhibit significant performance in discriminating different phases of matter and provide a new avenue for studying phase transitions. We investigate the phase transitions of three dimensional q -state Potts model on cubic lattice by using a transfer learning approach, Domain Adversarial Neural Network (DANN). With the unique neural network architecture, it could evaluate the high -temperature (disordered) and low -temperature (ordered) phases, and identify the first and second order phase transitions. Meanwhile, by training the DANN with a few labeled configurations, the critical points for q = 2, 3, 4 and 5 can be predicted with high accuracy, which are consistent with those of the Monte Carlo simulations. These findings would promote us to learn and explore the properties of phase transitions in high -dimensional systems.
摘要：
The functional neurons are basic building blocks of the nervous system and are responsible for transmitting information between different parts of the body. However, it is less known about the interaction between the neuron and the field. In this work, we propose a novel functional neuron by introducing a flux-controlled memristor into the FitzHugh-Nagumo neuron model, and the field effect is estimated by the memristor. We investigate the dynamics and energy characteristics of the neuron, and the stochastic resonance is also considered by applying the additive Gaussian noise. The intrinsic energy of the neuron is enlarged after introducing the memristor. Moreover, the energy of the periodic oscillation is larger than that of the adjacent chaotic oscillation with the changing of memristor-related parameters, and same results is obtained by varying stimuli-related parameters. In addition, the energy is proved to be another effective method to estimate stochastic resonance and inverse stochastic resonance. Furthermore, the analog implementation is achieved for the physical realization of the neuron. These results shed lights on the understanding of the firing mechanism for neurons detecting electromagnetic field.
