General Relativity and Gravitation最新文献_第6页

Non-static axisymmetric structures embedded in an asymptotically (Lambda )CDM universe 嵌入在渐近$$Lambda $$ CDM宇宙中的非静态轴对称结构

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-12 DOI: 10.1007/s10714-025-03359-4

Gonzalo García-Reyes

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Thin shell wormhole from rotating hairy black hole in (2+1)-dimensions （2+1）维旋转毛状黑洞的薄壳虫洞

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-08 DOI: 10.1007/s10714-025-03371-8

Farook Rahaman, Nilofar Rahman, Mehedi Kalam, Masum Murshid, Amit Das, Sayeedul Islam, Shyam Das

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Testing the nature of compact objects and the black hole paradigm 测试致密物体的本质和黑洞的范式

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-08 DOI: 10.1007/s10714-025-03361-w

Mariafelicia De Laurentis, Paolo Pani

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Quintessence scalar field and cosmological constant: dynamics of a multi-component dark energy model 精粹标量场与宇宙常数：多组分暗能量模型的动力学

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-07 DOI: 10.1007/s10714-025-03372-7

Prasanta Sahoo, Nandan Roy, Himadri Shekhar Mondal

{"title":"Quintessence scalar field and cosmological constant: dynamics of a multi-component dark energy model","authors":"Prasanta Sahoo, Nandan Roy, Himadri Shekhar Mondal","doi":"10.1007/s10714-025-03372-7","DOIUrl":"10.1007/s10714-025-03372-7","url":null,"abstract":"<div><p>This study explores the dynamics and phase-space behavior of a multi-component dark energy model, where the dark sector consists of a minimally coupled canonical scalar field and the cosmological constant, using a dynamical system analysis setup for various types of potential for which a general parameterization of the scalar field potentials has been considered. Several fixed points with different cosmological behaviors have been identified. A detailed stability analysis has been done and possible late-time attractors have been found. For this multi-component dark energy model, the late-time attractors are either fully dominated by the cosmological constant or represent a scenario where a combination of the scalar field and the cosmological constant dominates the universe. In this type of model, there is a possibility that the scalar field can become dynamical quite early compared to the standard era of dark energy domination. However, our analysis indicates that this early time contribution of the scalar field occurs deep in the matter-dominated era, not before the recombination era.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03372-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143258674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Thermodynamic phase transition of Anti-de Sitter Reissner–Nordström black holes with exotic Einstein–Maxwell gravities 具有奇异爱因斯坦-麦克斯韦引力的反德西特黑洞的热力学相变

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-06 DOI: 10.1007/s10714-025-03374-5

Hossein Ghaffarnejad, Elham Ghasemi

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Generation of effective massive Spin-2 fields through spontaneous symmetry breaking of scalar field 通过标量场的自发对称破缺产生有效的大质量自旋-2场

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-05 DOI: 10.1007/s10714-025-03367-4

Susobhan Mandal, S. Shankaranarayanan

{"title":"Generation of effective massive Spin-2 fields through spontaneous symmetry breaking of scalar field","authors":"Susobhan Mandal, S. Shankaranarayanan","doi":"10.1007/s10714-025-03367-4","DOIUrl":"10.1007/s10714-025-03367-4","url":null,"abstract":"<div><p>General relativity and quantum field theory are the cornerstones of our understanding of physical processes, from subatomic to cosmic scales. While both theories work remarkably well in their tested domains, they show minimal overlap. However, our research challenges this separation by revealing that non-perturbative effects bridge these distinct domains. We introduce a novel mechanism wherein, at linear order, spin-2 fields around an arbitrary background acquire <i>effective mass</i> due to the spontaneous symmetry breaking (SSB) of either global or local symmetry of complex scalar field minimally coupled to gravity. The action of the spin-2 field is identical to the extended Fierz-Pauli (FP) action, corresponding to the mass deformation parameter <span>(alpha = 1/2)</span>. We show that this occurs due to the effect of SSB on the variation of the energy-momentum tensor of the matter field, which has a dominant effect during SSB. The extended FP action has a salient feature, compared to the standard FP action: the action has 6 degrees of freedom with no ghosts. For local <i>U</i>(1) SSB, we establish that the effective mass of spin-2 fields is related to the mass of the gauge boson and the electric charge of the complex scalar field. Interestingly, our results indicate that the millicharged dark matter scalar fields, generating dark photons, can produce a mass of spin-2 fields of the same order as the Hubble constant <span>((H_0))</span>. Hence, we argue that the dark sector offers a natural explanation for the acceleration of the current Universe.\u0000</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108402","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Slowly rotating and charged black-holes in entangled relativity 纠缠相对论中缓慢旋转并带电的黑洞

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-04 DOI: 10.1007/s10714-025-03366-5

Maxime Wavasseur, Théo Abrial, Olivier Minazzoli

引用次数: 0

The confluent Heun functions in black hole perturbation theory: a spacetime interpretation 黑洞微扰理论中的合流Heun函数：一个时空解释

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-04 DOI: 10.1007/s10714-025-03364-7

Marica Minucci, Rodrigo Panosso Macedo

{"title":"The confluent Heun functions in black hole perturbation theory: a spacetime interpretation","authors":"Marica Minucci, Rodrigo Panosso Macedo","doi":"10.1007/s10714-025-03364-7","DOIUrl":"10.1007/s10714-025-03364-7","url":null,"abstract":"<div><p>This work provides a spacetime interpretation of the confluent Heun functions within black hole perturbation theory (BHPT) and explores their relationship to the hyperboloidal framework. In BHPT, the confluent Heun functions are solutions to the radial Teukolsky equation, but they are traditionally studied without an explicit reference to the underlying spacetime geometry. Here, we show that the distinct behaviour of these functions near their singular points reflects the structure of key geometrical surfaces in black hole spacetimes. By interpreting homotopic transformations of the confluent Heun functions as changes in the spacetime foliation, we connect these solutions to different regions of the black hole’s global structure, such as the past and future event horizons, past and future null infinity, spatial infinity, and even past and future timelike infinity. We also discuss the relationship between the confluent Heun functions and the hyperboloidal formulation of the Teukolsky equation. Although neither confluent Heun form of the radial Teukolsky equation can be interpreted as hyperboloidal slices, this approach offers new insights into wave propagation and scattering from a global black hole spacetime perspective.\u0000</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03364-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143083899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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}

引用次数: 0

Periodic orbits of neutral test particles in Reissner–Nordström naked singularities Reissner-Nordström裸奇点中性测试粒子的周期轨道

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-04 DOI: 10.1007/s10714-025-03368-3

Zoe C. S. Chan, Yen-Kheng Lim

{"title":"Periodic orbits of neutral test particles in Reissner–Nordström naked singularities","authors":"Zoe C. S. Chan, Yen-Kheng Lim","doi":"10.1007/s10714-025-03368-3","DOIUrl":"10.1007/s10714-025-03368-3","url":null,"abstract":"<div><p>We conduct studies on Levin’s taxonomy of periodic orbits for neutral test particles around a Reissner-Nordström naked singularity. It was known that naked singularities could harbor two distinct regions of time-like bound orbits and thus we expect periodic orbits to appear in both regions. It is possible for a pair of periodic orbits from both regions to possess the exact same angular momentum <i>L</i> and energy <i>E</i> values. We chart the sets of periodic orbits in (<i>L</i>, <i>E</i>)-parameter space and highlight the general distribution pattern of these sets for three possible scenarios. Regions within (<i>L</i>, <i>E</i>)-space can be partitioned into multiple domains <span>({mathcal {D}}_k)</span> based on the roots configuration of the quartic polynomial <i>P</i>(<i>u</i>) where <i>u</i> is the inverse radial coordinate. Consequently, each domain and interestingly enough, portions of certain periodic orbits sets that lie in different <span>({mathcal {D}}_k)</span> require different analytical solutions to plot the resulting orbit. Furthermore, we uncover physical properties of some hypothetical circular orbits residing in the inner region from analysing the (<i>L</i>, <i>E</i>)-space.\u0000</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143107941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Taming the classically divergent curvature in self-adjoint quantum black holes 驯服自伴随量子黑洞中的经典发散曲率

IF 2.1 4区物理与天体物理

General Relativity and Gravitation Pub Date : 2025-02-03 DOI: 10.1007/s10714-025-03373-6

Harpreet Singh, Malay K. Nandy

{"title":"Taming the classically divergent curvature in self-adjoint quantum black holes","authors":"Harpreet Singh, Malay K. Nandy","doi":"10.1007/s10714-025-03373-6","DOIUrl":"10.1007/s10714-025-03373-6","url":null,"abstract":"<div><p>It is well-known that the Kretschmann curvature diverges strongly at the classical singularity of the black hole interior. In this paper, we are therefore interested in whether such a strong divergence can be tamed quantum mechanically in the vicinity of the black hole singularity. For this purpose, we consider DeWitt-regular quantum black hole solutions of a self-adjoint Wheeler–DeWitt equation originating from a Kantowski-Sachs representation of the black hole interior, coupled with a Klein–Gordon field that accounts for the existence of zero-point quantum vacuum fluctuations. We find that there exist regular quantum black holes with self-adjoint Hamiltonians having well-behaved Kretschmann curvature in the vicinity of the singularity, tamed by stronger restrictions on the eigenvalues than ones required by the DeWitt boundary condition. Consequently, the Kretschmann-regular black holes are found in smaller but still infinite domains in the space of eigenvalues allowed by the DeWitt criterion. Furthermore, we find that other relevant classically diverging quantities pose no threat as their quantum mechanical counterparts are well-behaved in the vicinity of the singularity.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143083898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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