Science China Physics, Mechanics & Astronomy最新文献_第8页

Bridging the thermodynamics and kinetics of glass transition 衔接玻璃化转变的热力学和动力学

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-14 DOI: 10.1007/s11433-025-2722-9

Weihua Wang

引用次数: 0

Polymerization of hydrogen: A crucial milestone toward atomic metallic hydrogen 氢的聚合：迈向原子金属氢的重要里程碑

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-07 DOI: 10.1007/s11433-025-2732-1

Weiwei Dong, Xiaodong Li

引用次数: 0

Dual-channel convolutional-recurrent neural networks for multicolor soliton dynamics 多色孤子动力学的双通道卷积递归神经网络

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-03 DOI: 10.1007/s11433-025-2727-1

Junsong Peng

引用次数: 0

From large telescopes to the multiplexed survey telescope (MUST) 从大型望远镜到多路巡天望远镜（MUST）

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-02 DOI: 10.1007/s11433-025-2725-3

Zheng Cai, Song Huang, Yu Liu, Cheng Zhao, Lei Huang

{"title":"From large telescopes to the multiplexed survey telescope (MUST)","authors":"Zheng Cai, Song Huang, Yu Liu, Cheng Zhao, Lei Huang","doi":"10.1007/s11433-025-2725-3","DOIUrl":"10.1007/s11433-025-2725-3","url":null,"abstract":"<div><p>Recent advances in astronomical observations have ushered in an era of remarkable discoveries. We now probe the universe through multi-messenger signals, image the sky with unprecedented depth and resolution, and investigate individual sources using powerful large-aperture telescopes. Yet, a critical gap persists: the lack of wide-field, highly multiplexed spectroscopic capabilities needed to fully exploit the wealth of imaging data from current and upcoming surveys. In this review, we trace the historical development of large optical telescopes and spectroscopic surveys, assess the capabilities of ongoing and near-future facilities, and motivate the need for next-generation Stage-V spectroscopic experiments. As a representative example, we present the multiplexed survey telescope (MUST)—the first Stage-V spectroscopic facility currently under construction. MUST is a 6.5-m telescope designed to obtain optical spectra for over 20000 targets simultaneously within a ∼5 deg<sup>2</sup> field, using a modular focal plane populated with 6.2-mm pitch fiber-positioning robots. Over an 8-year survey in the 2030s, MUST aims to build the most comprehensive 3D spectroscopic map of the universe to date, measuring redshifts for over 100 million galaxies and quasars and opening new windows into cosmology, Galactic structure, and time-domain astrophysics.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 9","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical experiments of fast magnetic reconnection driven by the rapidly expanding plasma 快速膨胀等离子体驱动快速磁重联的数值实验

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-01 DOI: 10.1007/s11433-025-2688-0

Shanshan Xu, Jun Lin, Zhixing Mei

{"title":"Numerical experiments of fast magnetic reconnection driven by the rapidly expanding plasma","authors":"Shanshan Xu, Jun Lin, Zhixing Mei","doi":"10.1007/s11433-025-2688-0","DOIUrl":"10.1007/s11433-025-2688-0","url":null,"abstract":"<div><p>Three modes of magnetic reconnection, flux pile-up, Sonnerup, and hybrid, are examined in the context of driven magnetic reconnection via 2D and 2.5D magnetohydrodynamic (MHD) numerical simulations. They result from variances in gas pressure and magnetic field strength in the reconnection inflow region. The simulation demonstrates that the Spitzer diffusion region of magnetic reconnection is not just an X-point; instead, it appears as a slim and elongated current sheet that creates two pairs of the slow-mode shock (SS) on either end. These shocks contribute to forming four boundaries that separate the inflow from the outflow. In the regions far from the Spitzer diffusion region, two sets of rotational discontinuity (RD) stand inside the SSs and form the combination of SS and RD structures. The RDs reverse the magnetic field inside the reconnection outflow region, and create a W-shaped magnetic field in that region. The scenario that the rotation of the magnetic field is not caused by an intermediate wave, and the SS is located outside the RD, is consistent with the inference of Priest (Mon. Not. R. Astron. Soc. <b>159</b>, 389 (1972)), and is contrary to that of Petschek and Thorne (Astrophys. J. <b>147</b>, 1157 (1967)) and Vasyliunas (Rev. Geophys. Space Phys. <b>13</b>, 303 (1975)).</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 9","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160761","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Angle resolved photoemission spectroscopy study of excitons in quantum materials 量子材料中激子的角分辨光发射光谱研究

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-01 DOI: 10.1007/s11433-024-2685-6

Junzhang Ma, Ming Shi

{"title":"Angle resolved photoemission spectroscopy study of excitons in quantum materials","authors":"Junzhang Ma, Ming Shi","doi":"10.1007/s11433-024-2685-6","DOIUrl":"10.1007/s11433-024-2685-6","url":null,"abstract":"<div><p>Excitons, which are bound states consisting of electron-hole pairs, have garnered significant attention in condensed matter physics research over the past decade. Due to the key characteristics of charge neutrality, mobility, and photoelectric conversion, excitons have diverse applications in technologies, such as transistors, photodetectors, light-emitting diodes, and solar cells. The optical method has been commonly used to study excitons in semiconductors, but it falls short in providing momentum information. Consequently, angle-resolved photoemission spectroscopy (ARPES) has gained attention in recent years for its ability to offer direct insights into momentum space. This article reviews the recent progress of ARPES in the study of excitons in quantum materials, focusing on both stimulated and spontaneous excitons. For stimulated excitons in semiconductors, we review research involving two-photon time-resolved ARPES techniques, which detect exciton bound states directly within the semiconductor band gap, as well as single-photon ARPES studies that excite stimulated excitons manifested as side energy bands between conduction bands and valence bands. Regarding spontaneous excitons, we review ARPES studies that have been crucial in revealing the physical properties of excitons condensation and band folding effects. Finally, we offer a perspective on future research directions in this field.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 8","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160829","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Probing millicharged dark matter with magnetometer coupled to circuit 用磁力计连接电路探测带电暗物质

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-01 DOI: 10.1007/s11433-025-2717-5

Yuanlin Gong, Hongliang Tian, Lei Wu, Bin Zhu

引用次数: 0

Analysis and defense against joint-measurement attacks to quantum private query protocols for multi-rounds 多轮量子私有查询协议联合测量攻击分析与防御

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-07-01 DOI: 10.1007/s11433-025-2689-1

Bin Liu, Jiahao Huang, Wei Huang, Zhigang Li, Nankun Mu, Bingjie Xu, Bei Gong

{"title":"Analysis and defense against joint-measurement attacks to quantum private query protocols for multi-rounds","authors":"Bin Liu, Jiahao Huang, Wei Huang, Zhigang Li, Nankun Mu, Bingjie Xu, Bei Gong","doi":"10.1007/s11433-025-2689-1","DOIUrl":"10.1007/s11433-025-2689-1","url":null,"abstract":"<div><p>Quantum private query (QPQ) protocols based on quantum key distribution (QKD) have gained significant attention due to their practical implementation advantages. However, joint-measurement attacks pose a serious threat to their security, especially in real-world multi-query scenarios. Most existing QKD-based QPQ protocols become highly vulnerable when users make repeated database queries. Attackers can exploit strategies like minimum error discrimination (MED) and unambiguous state discrimination (USD) to completely break database security. This work thoroughly analyzes joint-measurement attacks in multi-round QPQ systems. We demonstrate that these attacks make current protocols practically unusable. To address this critical issue, we propose an effective defense method using classical post-processing. Our solution not only reveals fundamental flaws in existing approaches but also provides a reliable way to build secure QPQ systems. These findings enable the development of robust protocols that can withstand real-world usage patterns, moving QPQ technology from theory to practical application.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"68 8","pages":""},"PeriodicalIF":7.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A geometric quantum speed limit: Theoretical insights and photonic implementation 几何量子速度限制：理论见解和光子实现

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-06-30 DOI: 10.1007/s11433-025-2691-9

Qianyi Wang, Ben Wang, Jun Wang, Lijian Zhang

引用次数: 0

Null tests with Gaussian process 使用高斯过程进行空测试

IF 7.5 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2025-06-27 DOI: 10.1007/s11433-025-2682-1

Shengqing Gao, Qing Gao, Yungui Gong, Xuchen Lu

引用次数: 0