Science China Physics, Mechanics & Astronomy最新文献_第5页

Important step towards an understanding of the exotic Zc(3900) 为了解奇异的 Zc（3900）迈出重要一步

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-02 DOI: 10.1007/s11433-024-2426-0

C. Hanhart

引用次数: 0

Energy flux and waveform of gravitational wave generated by coalescing slow-spinning binary system in effective one-body theory 有效单体理论中慢速旋转双星系统凝聚产生的引力波的能量通量和波形

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-02 DOI: 10.1007/s11433-024-2415-y

Weike Deng, Sheng Long, Jiliang Jing

{"title":"Energy flux and waveform of gravitational wave generated by coalescing slow-spinning binary system in effective one-body theory","authors":"Weike Deng, Sheng Long, Jiliang Jing","doi":"10.1007/s11433-024-2415-y","DOIUrl":"10.1007/s11433-024-2415-y","url":null,"abstract":"<div>We extend our research on the energy flux and waveform characteristics of gravitational waves generated by merging nonspinning binary black holes through self-consistent effective one-body theory to include binary systems with slowly spinning black holes. Initially, we decompose the equation for the null tetrad component of the gravitationally perturbed Weyl tensor ψ\u0000 B4\u0000 \u0000 into radial and angular parts, leveraging the second-order approximation of the rotation parameter a. Subsequently, we derive an analytical solution for the radial equation and observe that our results are contingent upon the parameters a2, a3, and a, which represent the second- and third-order correction parameters, respectively. Ultimately, we calculate the energy flux, the radiation-reaction force and the waveform for the “plus” and “cross” modes of the gravitational waves generated by merging slowly spinning binary black holes.</div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":null,"pages":null},"PeriodicalIF":6.4,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931566","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

Precise determination of the pole position of the exotic Zc(3900) 精确测定奇异 Zc(3900) 的极点位置

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-02 DOI: 10.1007/s11433-023-2408-1

Yun-Hua Chen, Meng-Lin Du, Feng-Kun Guo

{"title":"Precise determination of the pole position of the exotic Zc(3900)","authors":"Yun-Hua Chen, Meng-Lin Du, Feng-Kun Guo","doi":"10.1007/s11433-023-2408-1","DOIUrl":"10.1007/s11433-023-2408-1","url":null,"abstract":"<div>We perform a unified description of the experimental data of the π+π− and J/ψπ± invariant mass spectra for e+e− → J/ψπ+π− and the D0D*− mass spectrum for e+e− → D0D*−π+ at e+e− center-of-mass energies 4.23 and 4.26 GeV. The analysis takes into account open-charm meson loops that contain triangle singularities, the (J/psipi-D{bar D}^*) coupled-channel interaction respecting unitarity, and the strong (pipi-K{bar K}) final state interaction using dispersion relations. The analysis leads to a precise determination of the Zc(3900) pole with the pole mass and width (3880.7 ± 1.7stat ± 22.4syst) MeV and (35.9 ± 1.4stat ± 15.3syst) MeV, respectively, and hints at that the (D{bar D}^*) molecular and non-molecular components are of similar importance in the Zc(3900) formation.</div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":null,"pages":null},"PeriodicalIF":6.4,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931576","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

Quantum age of vector magnetic field measurements 矢量磁场测量的量子时代

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-02 DOI: 10.1007/s11433-024-2450-1

Min Jiang

引用次数: 0

Geometric approach to robust quantum control for time-varying noises 时变噪声的鲁棒量子控制几何方法

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-02 DOI: 10.1007/s11433-024-2424-3

Rebing Wu

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The stress-thermal equivalence “memory effect” in glass materials 玻璃材料中的应力-热等效 "记忆效应

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-02 DOI: 10.1007/s11433-024-2461-8

Pengfei Guan

引用次数: 0

Atomic-to-molecular gas conversion: Combining multi-wavelength and multi-scale data 原子到分子的气体转换：结合多波长和多尺度数据

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-02 DOI: 10.1007/s11433-024-2460-2

Amélie Saintonge

引用次数: 0

Classification of high-ordered topological nodes towards Moiré flat bands in twisted bilayers 扭转双层膜中走向莫伊里平面带的高阶拓扑节点分类

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-02 DOI: 10.1007/s11433-024-2410-9

Fan Cui, Congcong Le, Qiang Zhang, Xianxin Wu, Jiangping Hu, Ching-Kai Chiu

{"title":"Classification of high-ordered topological nodes towards Moiré flat bands in twisted bilayers","authors":"Fan Cui, Congcong Le, Qiang Zhang, Xianxin Wu, Jiangping Hu, Ching-Kai Chiu","doi":"10.1007/s11433-024-2410-9","DOIUrl":"10.1007/s11433-024-2410-9","url":null,"abstract":"<div>At magic twisted angles, Dirac cones in twisted bilayer graphene (TBG) can evolve into flat bands, serving as a critical playground for the study of strongly correlated physics. When chiral symmetry is introduced, rigorous mathematical proof confirms that the flat bands are locked at zero energy in the entire Moiré Brillouin zone (BZ). Yet, TBG is not the sole platform that exhibits this absolute band flatness. Central to this flatness phenomenon are topological nodes and their specific locations in the BZ. In this study, considering twisted bilayer systems that preserve chiral symmetry, we classify various ordered topological nodes in base layers and all possible node locations across different BZs. Specifically, we constrain the node locations to rotational centers, such as Γ and M points, to ensure the interlayer coupling retains equal strength in all directions. Using this classification as a foundation, we systematically identify the conditions under which Moiré flat bands emerge. Additionally, through the extension of holomorphic functions, we provide proof that flat bands are locked at zero energy, shedding light on the origin of the band flatness. Remarkably, beyond Dirac cones, numerous twisted bilayer nodal platforms can host flat bands with a degeneracy number of more than two, such as four-fold, six-fold, and eight-fold. This multiplicity of degeneracy in flat bands might unveil more complex and enriched correlation physics.</div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":null,"pages":null},"PeriodicalIF":6.4,"publicationDate":"2024-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931567","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

Flux phases in the extended Hubbard model on the triangular lattice 三角形晶格上扩展哈伯德模型的通量相位

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-01 DOI: 10.1007/s11433-024-2413-5

Yuge Chen, Kun Jiang, Yi Zhang, Jiangping Hu

引用次数: 0

Rapidly growing primordial black holes as seeds of the massive high-redshift JWST Galaxies 快速增长的原始黑洞是大质量高红移 JWST 星系的种子

IF 6.4 1区物理与天体物理

Science China Physics, Mechanics & Astronomy Pub Date : 2024-08-01 DOI: 10.1007/s11433-024-2433-3

Guan-Wen Yuan, Lei Lei, Yuan-Zhu Wang, Bo Wang, Yi-Ying Wang, Chao Chen, Zhao-Qiang Shen, Yi-Fu Cai, Yi-Zhong Fan

{"title":"Rapidly growing primordial black holes as seeds of the massive high-redshift JWST Galaxies","authors":"Guan-Wen Yuan, Lei Lei, Yuan-Zhu Wang, Bo Wang, Yi-Ying Wang, Chao Chen, Zhao-Qiang Shen, Yi-Fu Cai, Yi-Zhong Fan","doi":"10.1007/s11433-024-2433-3","DOIUrl":"10.1007/s11433-024-2433-3","url":null,"abstract":"<div>A group of massive galaxies at redshifts of z ≳ 7 have been recently detected by the James Webb Space Telescope (JWST), which were unexpected to form at such an early time within the standard Big Bang cosmology. In this work, we propose that this puzzle can be explained by the presence of some primordial black holes (PBHs) with a mass of ∼ 1000M⊙. These PBHs act as seeds for early galaxy formation with masses of ∼ 108–1010M⊙ at high redshift, hence accounting for the JWST observations. We use a hierarchical Bayesian inference framework to constrain the PBH mass distribution models, and find that the Lognormal model with the Mc ∼ 750M⊙ is preferred over other hypotheses. These rapidly growing BHs are expected to have strong radiation and may appear as high-redshift compact objects, similar to those recently discovered by JWST. Although we focused on PBHs in this work, the bound on the initial mass of the seed black holes remains robust even if they were formed through astrophysical channels.</div>","PeriodicalId":774,"journal":{"name":"Science China Physics, Mechanics & Astronomy","volume":null,"pages":null},"PeriodicalIF":6.4,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141931571","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