Science China Physics, Mechanics & Astronomy最新文献

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Towards realistic detection pipelines of Taiji: New challenges in data analysis and high-fidelity simulations of space-based gravitational wave antenna 走向真实的太极探测管道:天基引力波天线数据分析与高保真仿真的新挑战
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-28 DOI: 10.1007/s11433-025-2870-8
Minghui Du, Pengcheng Wang, Ziren Luo, Wen-Biao Han, Xin Zhang, Xian Chen, Zhoujian Cao, Yonghe Zhang, He Wang, Xiaodong Peng, Li-E Qiang, Ke An, Yidi Fan, Jiafeng Zhang, Liang-Gui Zhu, Ping Shen, Qianyun Yun, Xiao-Bo Zou, Ye Jiang, Tianyu Zhao, Yong Yuan, Xiaotong Wei, Yuxiang Xu, Bo Liang, Peng Xu, Yueliang Wu
{"title":"Towards realistic detection pipelines of Taiji: New challenges in data analysis and high-fidelity simulations of space-based gravitational wave antenna","authors":"Minghui Du,&nbsp;Pengcheng Wang,&nbsp;Ziren Luo,&nbsp;Wen-Biao Han,&nbsp;Xin Zhang,&nbsp;Xian Chen,&nbsp;Zhoujian Cao,&nbsp;Yonghe Zhang,&nbsp;He Wang,&nbsp;Xiaodong Peng,&nbsp;Li-E Qiang,&nbsp;Ke An,&nbsp;Yidi Fan,&nbsp;Jiafeng Zhang,&nbsp;Liang-Gui Zhu,&nbsp;Ping Shen,&nbsp;Qianyun Yun,&nbsp;Xiao-Bo Zou,&nbsp;Ye Jiang,&nbsp;Tianyu Zhao,&nbsp;Yong Yuan,&nbsp;Xiaotong Wei,&nbsp;Yuxiang Xu,&nbsp;Bo Liang,&nbsp;Peng Xu,&nbsp;Yueliang Wu","doi":"10.1007/s11433-025-2870-8","DOIUrl":"10.1007/s11433-025-2870-8","url":null,"abstract":"<div><p>Taiji, a Chinese space-based gravitational wave (GW) detection project, aims to explore the millihertz GW universe with unprecedented sensitivity. By observing astrophysical and cosmological sources, including Galactic binaries, massive black hole binaries, extreme mass-ratio inspirals, and stochastic gravitational wave backgrounds, etc., Taiji is expected to deliver transformative insights into astrophysics, cosmology, and fundamental physics. However, Taiji’s data analysis faces unique challenges compared to ground-based detectors like LIGO-Virgo-KAGRA, such as the overlap of numerous signals, extended data durations, more rigorous accuracy requirements for the waveform templates, incompletely characterized noise spectra, non-stationary noises, and various data anomalies. Taking Taiji as a representative example, this paper reviews the data characteristics and data analysis challenges of space-based GW detection, and introduces the second round of Taiji Data Challenge, a collection of simulation datasets designed as a shared platform for resolving these critical issues. This platform distinguishes itself from previous works by the systematic integration of orbital dynamics based on a full drag-free and attitude control simulation, extended noise sources, more complicated and overlapping GW signals, second-generation time-delay interferometry, and the coupling effect of time-varying arm-lengths, etc. Concurrently released is the open-source toolkit Triangle (available at https://github.com/TriangleDataCenter), which offers the capabilities for customized simulation of signals, noises, and other instrumental effects. By taking a step further towards realistic detection, Taiji Data Challenge II and Triangle altogether serve as a new testbed, supporting the development of Taiji’s global analysis and end-to-end pipelines, and ultimately bridging the gaps between observation and scientific objectives.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342814","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
Parity violation in framework of nonmetricity gravity 非度量引力框架中的宇称违反
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-27 DOI: 10.1007/s11433-025-2890-7
Zhiyuan Yu, Zhengsheng Yang, Taotao Qiu
{"title":"Parity violation in framework of nonmetricity gravity","authors":"Zhiyuan Yu,&nbsp;Zhengsheng Yang,&nbsp;Taotao Qiu","doi":"10.1007/s11433-025-2890-7","DOIUrl":"10.1007/s11433-025-2890-7","url":null,"abstract":"<div><p>The latest observational data of the Planck satellite show a nontrivial value of polarization rotation angle caused by cosmic birefringence in the early universe. Moreover, the asymmetry of baryons versus anti-baryons still remains mysterious. Both of them indicate that there should be hidden new physics, such as fundamental symmetry breaking. In this paper, we try to interpret these two events in the framework of nonmetricity modified gravity. We introduce an interaction term between the nonmetricity-based function and matter current, and calculate both the rotation angle and baryon-to-photon ratio. We also constrain the model parameters using the current observational data. With some specific examples, we demonstrate that in nonmetric gravity theory, these two events can be interpreted in a unified way. Nevertheless, in this case, the minimal coupling of the nonmetricity scalar and the matter current might not be favored.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342447","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 comprehensive search for long and short periodic features from an extremely active cycle of FRB 20240114A 对FRB 20240114A极活跃周期的长、短周期特征的全面搜索
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-27 DOI: 10.1007/s11433-025-2866-2
Dengke Zhou, Pei Wang, Jianhua Fang, Weiwei Zhu, Bing Zhang, Di Li, Yi Feng, Yong-Feng Huang, Ke-Jia Lee, Jinlin Han, Yuan-Chuan Zou, Jun-Shuo Zhang, Shuo Xiao, Rui Luo, Long-Xuan Zhang, Tian-Cong Wang, Wanjin Lu, Jinhuang Cao, Wenfei Yu, Bing Li, Chen-Chen Miao, Jintao Xie, Yunchuan Chen, Han Wang, Yuanhong Qu, Huaxi Chen, Yuhao Zhu, Shuo Cao, Xiang-Lei Chen, Chen Du, He Gao, Yu-Xiang Huang, Ye Li, Jian Li, Dong-Zi Li, Lin Lin, Xiaohui Liu, Jia-Wei Luo, Jiarui Niu, Chen-Hui Niu, Qingyue Qu, Shiyan Tian, Chao-Wei Tsai, Fayin Wang, Yi-Dan Wang, Wei-Yang Wang, Bojun Wang, Suming Weng, Qin Wu, Zi-Wei Wu, Heng Xu, Aiyuan Yang, Yuan-Pei Yang, Shihan Yew, Yong-Kun Zhang, Lei Zhang, Chunfeng Zhang, Rushuang Zhao, Dejiang Zhou
{"title":"A comprehensive search for long and short periodic features from an extremely active cycle of FRB 20240114A","authors":"Dengke Zhou,&nbsp;Pei Wang,&nbsp;Jianhua Fang,&nbsp;Weiwei Zhu,&nbsp;Bing Zhang,&nbsp;Di Li,&nbsp;Yi Feng,&nbsp;Yong-Feng Huang,&nbsp;Ke-Jia Lee,&nbsp;Jinlin Han,&nbsp;Yuan-Chuan Zou,&nbsp;Jun-Shuo Zhang,&nbsp;Shuo Xiao,&nbsp;Rui Luo,&nbsp;Long-Xuan Zhang,&nbsp;Tian-Cong Wang,&nbsp;Wanjin Lu,&nbsp;Jinhuang Cao,&nbsp;Wenfei Yu,&nbsp;Bing Li,&nbsp;Chen-Chen Miao,&nbsp;Jintao Xie,&nbsp;Yunchuan Chen,&nbsp;Han Wang,&nbsp;Yuanhong Qu,&nbsp;Huaxi Chen,&nbsp;Yuhao Zhu,&nbsp;Shuo Cao,&nbsp;Xiang-Lei Chen,&nbsp;Chen Du,&nbsp;He Gao,&nbsp;Yu-Xiang Huang,&nbsp;Ye Li,&nbsp;Jian Li,&nbsp;Dong-Zi Li,&nbsp;Lin Lin,&nbsp;Xiaohui Liu,&nbsp;Jia-Wei Luo,&nbsp;Jiarui Niu,&nbsp;Chen-Hui Niu,&nbsp;Qingyue Qu,&nbsp;Shiyan Tian,&nbsp;Chao-Wei Tsai,&nbsp;Fayin Wang,&nbsp;Yi-Dan Wang,&nbsp;Wei-Yang Wang,&nbsp;Bojun Wang,&nbsp;Suming Weng,&nbsp;Qin Wu,&nbsp;Zi-Wei Wu,&nbsp;Heng Xu,&nbsp;Aiyuan Yang,&nbsp;Yuan-Pei Yang,&nbsp;Shihan Yew,&nbsp;Yong-Kun Zhang,&nbsp;Lei Zhang,&nbsp;Chunfeng Zhang,&nbsp;Rushuang Zhao,&nbsp;Dejiang Zhou","doi":"10.1007/s11433-025-2866-2","DOIUrl":"10.1007/s11433-025-2866-2","url":null,"abstract":"<div><p>Possible periodic features in fast radio bursts (FRBs) may provide insights into their astrophysical origins. Using extensive observations from the five-hundred-meter aperture spherical radio telescope (FAST), we conduct a multi-timescale periodicity search for the exceptionally active repeater FRB 20240114A. Our analysis is based on different datasets for different timescales: for short-timescale periodicity in time of arrivals (TOAs), we use 57 observations from January to August 2024; for long-timescale periodicity, we employ an extended TOA dataset comprising 111 observations spanning from January 2024 to October 2025; and for burst time series analysis, we utilize individual burst data from the 57 FAST observations. We identify three candidate short-timescale periodic signals (0.673, 0.635, and 0.536 s) with significances of 3.2<i>σ</i>-6<i>σ</i>, each detected in two independent observations. On longer timescales, we detect a significant (143.40 ± 7.19)-d periodicity with 5.2<i>σ</i> significance, establishing FRB 20240114A as a periodic repeater. In burst time series, we find quasi-periodic oscillations in the few hundred Hz range (3.4<i>σ</i> and 3.7<i>σ</i>) and periodic burst trains with periods of several to tens of milliseconds (3<i>σ</i>-3.9<i>σ</i>), though these periodic features appear transient and short-lived. The detection of periodic signals at these different timescales indicates that FRB 20240114A exhibits intriguing periodic self-similar characteristics. Despite the comprehensive dataset, no definitive periodicity linked to the source’s rotation is confirmed, placing stringent constraints on the intrinsic source properties and the modulation mechanisms. All data are available via the Science Data Bank.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342522","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
Gravitational wave standard sirens from GWTC-3 combined with DESI DR2 and DESY5: A late-universe probe of the Hubble constant and dark energy 来自GWTC-3与DESI DR2和DESY5的引力波标准警报器:哈勃常数和暗能量的晚期宇宙探测器
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-27 DOI: 10.1007/s11433-025-2888-0
Ji-Yu Song, Guo-Hong Du, Tian-Nuo Li, Ling-Feng Wang, Jing-Zhao Qi, Jing-Fei Zhang, Xin Zhang
{"title":"Gravitational wave standard sirens from GWTC-3 combined with DESI DR2 and DESY5: A late-universe probe of the Hubble constant and dark energy","authors":"Ji-Yu Song,&nbsp;Guo-Hong Du,&nbsp;Tian-Nuo Li,&nbsp;Ling-Feng Wang,&nbsp;Jing-Zhao Qi,&nbsp;Jing-Fei Zhang,&nbsp;Xin Zhang","doi":"10.1007/s11433-025-2888-0","DOIUrl":"10.1007/s11433-025-2888-0","url":null,"abstract":"<div><p>Recently, the combination of the Dark Energy Spectroscopic Instrument (DESI) Data Release 2 (DR2) baryon acoustic oscillation (BAO) data and the Planck cosmic microwave background (CMB) measurements has shown a ∼ 3<i>σ</i> preference for a dynamical dark energy model with a phantom-crossing behavior. However, such a phantom-crossing dark energy evolution from <i>w</i> &lt; −1 to <i>w</i> &gt; −1 further exacerbates the already severe Hubble tension in the ΛCDM model. Moreover, there exists a ∼ 2<i>σ</i> tension between the DESI DR2 BAO and CMB datasets. Therefore, it is essential to measure the Hubble constant and dark-energy equation-of-state (EoS) parameters using only late-universe observations. In this work, we investigate a novel late-universe data combination: gravitational-wave (GW) standard sirens, BAO, and Type Ia supernovae (SNe Ia). This combination provides a fully distance-ladder- and CMB-independent determination of the Hubble constant and the dark-energy EoS. Using 47 GW standard sirens from the third Gravitational-Wave Transient Catalog, the DESI DR2 BAO data, and DESY5 SNe Ia data, in the <i>w</i><sub>0</sub><i>w</i><sub><i>a</i></sub>CDM model, we obtain <span>(H_{0}=74.8_{-8.9}^{+6.3},rm{km},rm{s}^{-1},rm{Mpc}^{-1},Omega_{rm{m}}=0.320_{-0.012}^{+0.015},w_{0}=-0.775_{-0.074}^{+0.072})</span>, and <i>w</i><sub><i>a</i></sub> = −0.80 ± 0.47, indicating a mild phantom-crossing behavior within the 1<i>σ</i> credible interval with an <i>H</i><sub>0</sub> value consistent with the distance ladder measurements. Our analysis demonstrates the power of GW standard sirens in breaking parameter degeneracies, and for the first time, achieves robust joint constraints on the Hubble constant and the dark-energy EoS parameters based on real GW data.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342525","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
Constructing practical fully quantum networks within intracity areas 在城市区域内构建实用的全量子网络
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-26 DOI: 10.1007/s11433-025-2887-4
Feihao Zhang, Min Wang, Xiuwei Chen, Penghao Niu, Ruisong Bao, Jianxing Guo, Dong Pan, Gui-Lu Long
{"title":"Constructing practical fully quantum networks within intracity areas","authors":"Feihao Zhang,&nbsp;Min Wang,&nbsp;Xiuwei Chen,&nbsp;Penghao Niu,&nbsp;Ruisong Bao,&nbsp;Jianxing Guo,&nbsp;Dong Pan,&nbsp;Gui-Lu Long","doi":"10.1007/s11433-025-2887-4","DOIUrl":"10.1007/s11433-025-2887-4","url":null,"abstract":"<div><p>Quantum networks play a pivotal role in the advancement of quantum technologies, expanding the scope of applications and communication distances. However, the absence of practical quantum repeaters poses a significant obstacle to large-scale network construction. Trusted repeater networks, on the other hand, utilize classical trusted repeaters to connect users, thereby sacrificing the information-theoretic security advantage inherent in quantum communication. In this study, we propose a scheme for constructing a fully quantum network in which any two users are directly connected via a switchable optical router, ensuring information-theoretic security across the entire network with existing technologies. Considering that the practical point-to-point quantum communication distance in optical fibers has reached 100 km, our scheme effectively addresses the challenge of building a fully quantum network within an urban area. A 40-km-long functional quantum network has been established using commercial optical links, enabling full operations of tasks such as quantum secure direct communication and quantum key distribution.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147341837","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
Quasinormal modes of Schwarzschild-de Sitter black holes in semi-open systems 半开放系统中史瓦西-德西特黑洞的拟正态模
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-26 DOI: 10.1007/s11433-025-2912-y
Liang-Bi Wu, Libo Xie, Li-Ming Cao, Ming-Fei Ji, Yu-Sen Zhou
{"title":"Quasinormal modes of Schwarzschild-de Sitter black holes in semi-open systems","authors":"Liang-Bi Wu,&nbsp;Libo Xie,&nbsp;Li-Ming Cao,&nbsp;Ming-Fei Ji,&nbsp;Yu-Sen Zhou","doi":"10.1007/s11433-025-2912-y","DOIUrl":"10.1007/s11433-025-2912-y","url":null,"abstract":"<div><p>We study perturbations of Schwarzschild-de Sitter black holes in semi-open systems by using the Heun functions. For the semi-open system, a partially reflective wall is added around the event horizon. Three aspects of this model are investigated, namely the quasinormal mode (QNM) spectra, the greybody factor (GF), and the exceptional point (EP). For the QNM aspect, we identify three distinct behaviors as the frequency-independent reflectivity <span>(cal K)</span> increases. The first-type modes approach the real axis and form long-lived quasi-bound states. The second-type modes move toward but do not reach the real axis and retain a finite decay rate. The third-type modes eventually lie on the imaginary axis becoming purely decaying modes. For the GF aspect, GFs exhibit strong oscillations controlled by the distance between the potential and the reflective wall with a real constant reflectivity. In contrast, a Boltzmann-type reflectivity produces only small corrections. Finally, by promoting <span>(cal K)</span> to a complex parameter, the modified boundary conditions give rise to a second-order EP. Parameterizing the vicinity of such EP, we observe the mode exchange phenomenon, and the deviation of spectra scale with the square root of the deviation of the parameter, as predicted by a Puiseux series expansion.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342179","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
Hybrid-driven inverse design of multifunctional plate-type metastructures 多功能板型元结构的混合驱动反设计
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-14 DOI: 10.1007/s11433-025-2891-y
Linjie Jian, Junfeng He, Guilin Wen, Jie Yang, Yi Min Xie, Jie Liu
{"title":"Hybrid-driven inverse design of multifunctional plate-type metastructures","authors":"Linjie Jian,&nbsp;Junfeng He,&nbsp;Guilin Wen,&nbsp;Jie Yang,&nbsp;Yi Min Xie,&nbsp;Jie Liu","doi":"10.1007/s11433-025-2891-y","DOIUrl":"10.1007/s11433-025-2891-y","url":null,"abstract":"<div><p>The realm of high-end equipment necessitates the development of plate-type metastructures integrating lightweight, high static load-bearing, and superior low-frequency dynamic performance. However, the rapid on-demand inverse design of such plate-type metastructures remains challenging. This study proposes a “data + non-data” hybrid-driven inverse design (HDID) method for a class of locally resonant plate-type multifunctional metastructure (LRPMM). The LRPMM primarily comprises two spiral plates, a square honeycomb core, and a cylinder. Its load-bearing and dynamic performance are characterized by bending stiffness and flexural wave bandgap, respectively, both investigated through theoretical and numerical methods. The bandgap is predicted through the synthesis of a discrete dimensionality-reduction strategy and the plane-wave expansion method. Based on this, a dataset is generated, and a forward prediction network model is trained. Then, a “data + non-data” model is constructed to target the customization of bending stiffness and flexural wave bandgap. The core of the hybrid-driven tandem neural network model lies in the fact that pre-trained forward prediction network models are employed for predicting the flexural wave bandgap with a strongly nonlinear property, while physical equations are used to characterize the bending stiffness with a weakly nonlinear property. Results demonstrate that the proposed HDID method can improve the design efficiency by over 10% while ensuring high accuracy, compared with the conventional data-driven inverse design (DDID) method. Notably, the proposed method enables the design of the metastructure with a bending stiffness of 18315 N m, an equivalent density of 2 g cm<sup>−3</sup>, and effective flexural wave suppression in the frequency range of 55.9–94.5 Hz. Finally, vibration suppression experiments are conducted to validate the effectiveness of the proposed HDID method.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147559181","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
Using precession and quasiperiodic oscillations to constrain a rotating regular black hole 使用进动和准周期振荡来约束旋转的规则黑洞
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-13 DOI: 10.1007/s11433-025-2874-6
Meng-He Wu, Hong Guo, Xiao-Mei Kuang
{"title":"Using precession and quasiperiodic oscillations to constrain a rotating regular black hole","authors":"Meng-He Wu,&nbsp;Hong Guo,&nbsp;Xiao-Mei Kuang","doi":"10.1007/s11433-025-2874-6","DOIUrl":"10.1007/s11433-025-2874-6","url":null,"abstract":"<div><p>In this paper, we investigate the frame-dragging effect on an accretion disk and test gyroscope orbiting around a rotating regular black hole with a Minkowski core. Firstly, we perturb a bound timelike circular orbit around the black hole, and analyze the periastron precession and Lense-Thirring (LT) precession frequencies of the orbit’s epicyclic oscillations. Since these epicyclic oscillations can be used to explain the quasiperiodic oscillations (QPOs) phenomena of the accretion disc around this rotating regular black hole, we then employ the Markov chain Monte Carlo (MCMC) simulation to fit our theoretical results with five QPOs events (GRO J1655-40, GRS 1915+105, XTE J1859+226, H1743-322, and XTE J1550-564). The simulations give the relevant physical parameter space of the black hole, including the characteristic radius <i>r</i>, the mass related parameter <i>M</i>, the spinning parameter <i>a</i>, and the quantum gravity effect <i>α</i>. The results give the constraint on the quantum effect parameter, with an upper limit <i>α</i>/<i>M</i><sup>2/3</sup> &lt; 0.60 at the 95% C.L., which is tighter than &lt; 0.7014 in our previous study within static case. Then, we theoretically explore the LT precession frequency, geodetic precession frequency, and the general spin precession frequency of a test gyro attached to a stationary observer in this black hole background. We find that the quantum gravity effect suppresses the precession frequencies comparing against those in Kerr black hole, further providing a theoretical diagnostic of the potential quantum gravity effect.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338991","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
Theoretical foundations of the general standard model: A unified framework for particle physics and cosmology 一般标准模型的理论基础:粒子物理学和宇宙学的统一框架
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-13 DOI: 10.1007/s11433-025-2876-0
Yue-Liang Wu
{"title":"Theoretical foundations of the general standard model: A unified framework for particle physics and cosmology","authors":"Yue-Liang Wu","doi":"10.1007/s11433-025-2876-0","DOIUrl":"10.1007/s11433-025-2876-0","url":null,"abstract":"<div><p>We present a comprehensive theoretical analysis of the general standard model (GSM), a recently proposed framework that unifies particle physics and cosmology within the gravitational quantum field theory (GQFT). Constructed from first principles based exclusively on the intrinsic properties of leptons and quarks, the GSM reveals an enlarged gauge symmetry structure, WS<sub><i>c</i></sub>(1,3)×GS(1)×Z<sub>2</sub>, which extends beyond the conventional U<sub><i>Y</i></sub>(1)×SU<sub><i>L</i></sub>(2)×SU<sub><i>C</i></sub>(3) symmetry of the standard model. Here, WS<sub><i>c</i></sub>(1,3) = SP(1,3)⋊W<sup>1,3</sup>⋊SP<sub><i>c</i></sub>(1,1) emerges as the conformal inhomogeneous spin gauge symmetry. Within GQFT, the GSM provides a consistent unification of the standard model of particle physics with cosmological models. It incorporates the four known fundamental interactions, electromagnetic, weak, strong, and gravitational, plus the Higgs scalar interaction, and also predicts novel interactions. These include spin gauge, chirality boost-spin gauge, chiral conformal-spin gauge, and scaling gauge forces, as well as additional scalar interactions. Furthermore, the GSM offers profound insights into the nature of gravity and spacetime and elucidates key mysteries of the dark side of the universe, such as the origins of dark matter, the dynamics of dark energy, and the physics of the early inflationary epoch. By establishing a new theoretical bridge between quantum field theory and general relativity, the GSM opens novel pathways for addressing long-standing challenges in fundamental physics. It provides a unified description of both fundamental interactions and cosmic evolution.</p></div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":"69 4","pages":""},"PeriodicalIF":7.5,"publicationDate":"2026-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338931","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
Tuning the hydrogen-bonding and dynamical behaviors of confined monolayer water via hydrophobic molecules 通过疏水分子调节密闭单层水的氢键和动力学行为
IF 7.5 1区 物理与天体物理
Science China Physics, Mechanics & Astronomy Pub Date : 2026-02-13 DOI: 10.1007/s11433-026-2930-0
Xiao Cheng Zeng
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