Science China Physics, Mechanics & Astronomy最新文献

{"title":"Probing dark matter particles from evaporating primordial black holes via electron scattering in the CDEX-10 experiment","authors":"Zhenhua Zhang,&nbsp;Litao Yang,&nbsp;Qian Yue,&nbsp;Kejun Kang,&nbsp;Yuanjing Li,&nbsp;Haipeng An,&nbsp;C. Greeshma,&nbsp;Jianping Chang,&nbsp;Yunhua Chen,&nbsp;Jianping Cheng,&nbsp;Wenhan Dai,&nbsp;Zhi Deng,&nbsp;Changhao Fang,&nbsp;Xinping Geng,&nbsp;Hui Gong,&nbsp;Qiuju Guo,&nbsp;Tao Guo,&nbsp;Xuyuan Guo,&nbsp;Li He,&nbsp;Shengming He,&nbsp;Jinwei Hu,&nbsp;Hanxiong Huang,&nbsp;Tuchen Huang,&nbsp;Lin Jiang,&nbsp;S. Karmakar,&nbsp;Haubin Li,&nbsp;Hanyu Li,&nbsp;Jianmin Li,&nbsp;Jin Li,&nbsp;Qianyun Li,&nbsp;Renmingjie Li,&nbsp;Xueqian Li,&nbsp;Yulan Li,&nbsp;Yifan Liang,&nbsp;Bin Liao,&nbsp;FongKay Lin,&nbsp;ShinTed Lin,&nbsp;Jiaxuan Liu,&nbsp;Shukui Liu,&nbsp;Yandong Liu,&nbsp;Yu Liu,&nbsp;Yuanyuan Liu,&nbsp;Hao Ma,&nbsp;Yucai Mao,&nbsp;Qiyuan Nie,&nbsp;Jinhua Ning,&nbsp;Hui Pan,&nbsp;Ningchun Qi,&nbsp;Jie Ren,&nbsp;Xichao Ruan,&nbsp;Monoj Kumar Singh,&nbsp;Tianxi Sun,&nbsp;Changjian Tang,&nbsp;Yang Tian,&nbsp;Guangfu Wang,&nbsp;Junzheng Wang,&nbsp;Li Wang,&nbsp;Qing Wang,&nbsp;Yufeng Wang,&nbsp;Yunxiang Wang,&nbsp;Henry Tsz-King Wong,&nbsp;Shiyong Wu,&nbsp;Yucheng Wu,&nbsp;Haoyang Xing,&nbsp;Rui Xu,&nbsp;Yin Xu,&nbsp;Tao Xue,&nbsp;Yulu Yan,&nbsp;Nan Yi,&nbsp;Chunxu Yu,&nbsp;Haijun Yu,&nbsp;Jianfeng Yue,&nbsp;Ming Zeng,&nbsp;Zhi Zeng,&nbsp;Bingtao Zhang,&nbsp;Fengshou Zhang,&nbsp;Lei Zhang,&nbsp;Zhenyu Zhang,&nbsp;Jizhong Zhao,&nbsp;Kangkang Zhao,&nbsp;Minggang Zhao,&nbsp;Jifang Zhou,&nbsp;Zuying Zhou,&nbsp;Jingjun Zhu,&nbsp;CDEX Collaboration","doi":"10.1007/s11433-024-2446-2","DOIUrl":"10.1007/s11433-024-2446-2","url":null,"abstract":"<div><p>Dark matter (DM) is a major constituent of the Universe. However, no definite evidence of DM particles (denoted as “<i>χ</i>”) has been found in DM direct detection (DD) experiments to date. There is a novel concept of detecting <i>χ</i> from evaporating primordial black holes (PBHs). We search for <i>χ</i> emitted from PBHs by investigating their interaction with target electrons. The examined PBH masses range from 1 × 10¹⁵ to 7 <i>×</i> 10¹⁶ g under the current limits of PBH abundance <i>f</i>_PBH. Using 205.4 kg·day data obtained from the CDEX-10 experiment conducted in the China Jinping Underground Laboratory, we exclude the <i>χ</i>-electron (<i>χ</i>-<i>e</i>) elastic-scattering cross section <span>(sigma_{{chi}^{e}})</span> ∼ 5 × 10⁻²⁹ cm² for <i>χ</i> with a mass <i>m</i>_<i>χ</i> ≲ 0.1 keV from our results. With the higher radiation background but lower energy threshold (160 eV), CDEX-10 fills a part of the gap in the previous work. If (<span>(m_{chi}, sigma_{{chi}^{e}})</span>) can be determined in the future, DD experiments are expected to impose strong constraints on <i>f</i>_PBH for large <i>M</i>_PBHs.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194570","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}

{"title":"Finite-size-induced non-Hermitian phase transitions in real space","authors":"Hongfei Wang,&nbsp;Biye Xie,&nbsp;Wei Ren","doi":"10.1007/s11433-024-2453-6","DOIUrl":"10.1007/s11433-024-2453-6","url":null,"abstract":"<div><p>While non-Hermiticity provokes intriguing phenomena without Hermitian counterparts, e.g., the skin effect and the breakdown of bulk-boundary correspondence, attracting extensive attention both in fundamental physics and device engineering, the role of finite sizes therein remains elusive. Here, we propose a class of finite-size-induced non-Hermitian phase transitions, relying upon higher-order topological invariants associated with real-space wave functions. The phase diagrams for general non-Hermitian chiral models are further acquired to demonstrate our topological definition. Such phase transitions are elucidated qualitatively by an effective intercell coupling alteration that depends on finite sizes in respective directions. Besides, we mimic these phenomena by analogizing the circuit Laplacian in finite-size electric circuits with nonreciprocal couplings. The resultant admittance spectra agree with our theoretical predictions. Our findings shed light on the finite-size mechanism of non-Hermitian topological phase transitions and pave the way for applications in switching and sensing.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194573","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}

{"title":"Exploring multiple phases and first-order phase transitions in Kármán Vortex Street","authors":"Xu Li,&nbsp;Xing Xiang,&nbsp;Tingting Xue,&nbsp;Limin Wang,&nbsp;Xiaosong Chen","doi":"10.1007/s11433-024-2437-3","DOIUrl":"10.1007/s11433-024-2437-3","url":null,"abstract":"<div><p>Kármán Vortex Street, a fascinating phenomenon of fluid dynamics, has intrigued the scientific community for a long time. Many researchers have dedicated their efforts to unraveling the essence of this intriguing flow pattern. Here, we apply the lattice Boltzmann method with curved boundary conditions to simulate flows around a circular cylinder and study the emergence of Kármán Vortex Street using the eigen microstate approach, which can identify phase transition and its order-parameter. At low Reynolds number, there is only one dominant eigen microstate W¹ of laminar flow. At Re<span>\u0000 ¹_c\u0000 \u0000 </span> = 53.6, there is a phase transition with the emergence of an eigen microstate pair W^2,3 of pressure and velocity fields. Further at Re<span>\u0000 ²_c\u0000 \u0000 </span>. = 56, there is another phase transition with the emergence of two eigen microstate pairs W^4,5 and W^6,7. Using the renormalization group theory of eigen microstate, both phase transitions are determined to be first-order. The two-dimensional energy spectrum of eigen microstate for W¹, W^2,3 after Re_c¹, W^4–7 after Re<span>\u0000 ²_c\u0000 \u0000 </span> exhibit −5/3 power-law behavior of Kolnogorov’s K41 theory. These results reveal the complexity and provide an analysis of the Kármán Vortex Street from the perspective of phase transitions.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11433-024-2437-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194575","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oxygens matter in the bilayer nickelate superconductor","authors":"Kazuhiko Kuroki","doi":"10.1007/s11433-024-2459-4","DOIUrl":"10.1007/s11433-024-2459-4","url":null,"abstract":"","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412356","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}

{"title":"Holographic superfluid ring with a weak link","authors":"Zhi-Hong Li,&nbsp;Huai-Fan Li","doi":"10.1007/s11433-024-2434-1","DOIUrl":"10.1007/s11433-024-2434-1","url":null,"abstract":"<div><p>We explore the generation of topological defects in the course of a dynamical phase transition in a ring with a weak link, i.e., a SSS Josephson junction, from the AdS/CFT correspondence. By setting different parameters of the junction (width, steepness, depth) and the final temperature of the quench, the configurations of the charge density and condensate of the order parameters of the dual field theory are presented. Meanwhile, we observe that in the final equilibrium state, variations in parameters of the junctions only affect the configurations of the charge density and condensate of the order parameters, without altering their values outside the junction. However, variations in the final temperature will directly affect the values of the charge density and condensate of the order parameters outside of the junction. Moreover, in the final equilibrium state, we propose an analytic relation between the gauge-invariant velocity in the two superconducting states in the SSS Josephson junction, which agrees well with the numerical results.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 11","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194577","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}

{"title":"Testing the first law of black hole mechanics with gravitational waves","authors":"Chao-Wan-Zhen Wang,&nbsp;Jin-Bao Zhu,&nbsp;Guo-Qing Huang,&nbsp;Fu-Wen Shu","doi":"10.1007/s11433-024-2442-3","DOIUrl":"10.1007/s11433-024-2442-3","url":null,"abstract":"<div><p>The successful observation of gravitational waves has provided humanity with an additional method to explore the universe, particularly black holes. In this study, we utilize data from LIGO and Virgo gravitational wave observations to test the first law of black hole mechanics, employing two different approaches. We consider the secondary compact object as a perturbation to the primary black hole before the merger, and the remnant black hole as a stationary black hole after the merger. In the pre-merger and post-merger analysis, our results demonstrate consistency with the first law, with an error level of approximate 25% at a 68% credibility level for GW190403_051519. In the full inspiral-merger-ringdown analysis, our results show consistency with the first law of black hole mechanics, with an error level of about 6% at a 68% credibility level and 10% at a 95% credibility level for GW191219_163120. Additionally, we observe that the higher the mass ratio of the gravitational wave source, the more consistent our results are with the first law of black hole mechanics. Overall, our study sheds light on the nature of compact binary coalescence and their implications for black hole mechanics.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194576","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}

{"title":"Entanglement dynamics in κ-deformed spacetime","authors":"Xiaobao Liu,&nbsp;Zehua Tian,&nbsp;Jiliang Jing","doi":"10.1007/s11433-023-2419-7","DOIUrl":"10.1007/s11433-023-2419-7","url":null,"abstract":"<div><p>We treat two identical and mutually independent two-level atoms that are coupled to a quantum field as an open quantum system. The master equation that governs their evolution is derived by tracing over the degree of freedom of the field. With this, we compare the entanglement dynamics of the two atoms moving with different trajectories in <i>κ</i>-deformed and Minkowski spacetimes. Notably, when the environment-induced interatomic interaction does not exist, the entanglement dynamics of two static atoms in <i>κ</i>-deformed spacetime are reduced to that in Minkowski spacetime in the case that the spacetime deformation parameter <i>κ</i> is sufficiently large as theoretically predicted. However, if the atoms undergo relativistic motion, regardless of whether inertial or non-inertial, their entanglement dynamics in <i>κ</i>-deformed spacetime behave differently from that in Minkowski spacetime even when <i>κ</i> is large. We investigate various types of entanglement behavior, such as decay and generation, and discuss how different relativistic motions, such as uniform motion in a straight line and circular motion, amplify the differences in the entanglement dynamics between the <i>κ</i>-deformed and Minkowski spacetime cases. In addition, when the environment-induced interatomic interaction is considered, we find that it may also enhance the differences in the entanglement dynamics between these two spacetimes. Thus, in principle, one can tell whether she/he is in <i>κ</i>-deformed or Minkowski spacetime by checking the entanglement behavior between two atoms in certain circumstances.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194578","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}

{"title":"Revealing high-dimensional dynamical symmetry in alignment magnetic resonance","authors":"M. Suhail Zubairy","doi":"10.1007/s11433-024-2444-5","DOIUrl":"10.1007/s11433-024-2444-5","url":null,"abstract":"","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412019","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}

{"title":"A new route to weak force sensing beyond SQL: Squeezed magnons in cavity magnomechanics","authors":"Ş. K. Özdemir","doi":"10.1007/s11433-024-2454-2","DOIUrl":"10.1007/s11433-024-2454-2","url":null,"abstract":"","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411874","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}

{"title":"The pseudospectrum and spectrum (in)stability of quantum corrected Schwarzschild black hole","authors":"Li-Ming Cao,&nbsp;Jia-Ning Chen,&nbsp;Liang-Bi Wu,&nbsp;Libo Xie,&nbsp;Yu-Sen Zhou","doi":"10.1007/s11433-024-2435-5","DOIUrl":"10.1007/s11433-024-2435-5","url":null,"abstract":"<div><p>In this study, we investigate the pseudospectrum and spectrum (in)stability of quantum corrected Schwarzschild black hole. Methodologically, we use the hyperboloidal framework to cast the quasinormal mode (QNM) problem into an eigenvalue problem associated with a non-selfadjoint operator, and then the spectrum and pseudospectrum are depicted. Besides, the invariant subspace method is exploited to improve the computational efficiency for pseudospectrum. The investigation into the spectrum (in)stability entails two main aspects. On the one hand, we calculate the spectra of the quantum corrected black hole, then by the means of the migration ratio, the impact of the quantum correction effect on the Schwarzschild black hole has been studied. The results indicate that the so-called “migration ratio instability” will occur for small black holes with small angular momentum number <i>l</i>. In the eikonal limit, the migration ratios remain the same for each overtone. On the other hand, we study the spectrum (in)stability of the quantum corrected black hole by directly adding some particular perturbations into the effective potential, where perturbations are located at the event horizon and null infinity, respectively. There are two interesting observations under the same perturbation energy norm. First, perturbations at infinity are more capable of generating spectrum instability than those at the event horizon. Second, we find that the peak distribution can lead to the instability of QNM spectrum more efficiently than the average distribution.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"67 10","pages":""},"PeriodicalIF":6.4,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11433-024-2435-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142194579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}