发布求助
文献互助 智能选刊 最新文献

General Relativity and Gravitation最新文献

筛选
英文 中文
Numerical Evidence for Non-Axisymmetric Gravitational “Hair” for Extremal Kerr Black Hole Spacetimes with Hyperboloidal Foliations 具有双曲叶状的极端Kerr黑洞时空非轴对称引力“毛发”的数值证据
IF 2.1 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-02-17 DOI: 10.1007/s10714-025-03378-1
Som Dev Bishoyi, Subir Sabharwal, Gaurav Khanna
{"title":"Numerical Evidence for Non-Axisymmetric Gravitational “Hair” for Extremal Kerr Black Hole Spacetimes with Hyperboloidal Foliations","authors":"Som Dev Bishoyi,&nbsp;Subir Sabharwal,&nbsp;Gaurav Khanna","doi":"10.1007/s10714-025-03378-1","DOIUrl":"10.1007/s10714-025-03378-1","url":null,"abstract":"<div><p>Various generalizations of the scalar, axisymmetric “horizon hair” for extremal black holes have recently appeared in the literature. In this paper, we propose an expression for a non-axisymmetric gravitational “charge” and its potentially observable imprint at a finite distance from the horizon (Ori-coefficient) in extremal Kerr black hole backgrounds. Using a hyperboloidal foliation, we offer strong and robust numerical evidence for the potential existence of this horizon hair and its properties. Specifically, we consider the time evolution of horizon penetrating, quadrupolar and (subdominant) octupolar gravitational perturbations with compact support on extremal Kerr (EK) spacetime. We do this by numerically solving the Teukolsky equation and determining the conserved charge values on the horizon and at a finite distance from the black hole.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430883","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
Proca stars in excited states 处于激发态的Proca星
IF 2.1 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-02-15 DOI: 10.1007/s10714-025-03375-4
Carlos Joaquin, Miguel Alcubierre
{"title":"Proca stars in excited states","authors":"Carlos Joaquin,&nbsp;Miguel Alcubierre","doi":"10.1007/s10714-025-03375-4","DOIUrl":"10.1007/s10714-025-03375-4","url":null,"abstract":"<div><p>In this paper, we consider families of solutions for excited states of Proca stars in spherical symmetry. We focus on the first two excited configurations and perform a series of fully non-linear dynamical simulations in order to study their properties and stability. Our analysis reveals that excited Proca stars are always unstable against even very small perturbations, and their dynamical evolution can lead to three different final states: collapse to a black hole, dissipation, or migration to a different configuration in the ground state. We find that migration to the ground state can only occur in a small region of the parameter space of solutions with negative binding energy.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03375-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143418415","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
On supertranslation invariant Lorentz charges 关于超平移不变洛伦兹电荷
IF 2.1 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-02-15 DOI: 10.1007/s10714-025-03381-6
Sumanta Chakraborty, S. K. Jahanur Hoque, Amitabh Virmani
{"title":"On supertranslation invariant Lorentz charges","authors":"Sumanta Chakraborty,&nbsp;S. K. Jahanur Hoque,&nbsp;Amitabh Virmani","doi":"10.1007/s10714-025-03381-6","DOIUrl":"10.1007/s10714-025-03381-6","url":null,"abstract":"<div><p>In recent papers, Fuentealba, Henneaux, and Troessaert (FHT) gave definitions for supertranslation invariant Lorentz charges in the ADM Hamiltonian formalism and showed that their definitions match with the Chen, Wang, Yau (CWY) definitions of Lorentz charges at null infinity which are free from “supertranslation ambiguities”. In this brief note, motivated by the analysis of FHT, we write expressions for the supertranslation invariant Lorentz charges in Beig–Schmidt variables at spacelike and timelike infinity. We present calculations, building upon the work of Compère, Gralla, and Wei (CGW), to show that our expressions for supertranslation invariant Lorentz charges match the CWY definitions at null infinity.\u0000</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143417197","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
Black holes as laboratories: searching for ultralight fields 作为实验室的黑洞：寻找超轻场
IF 2.1 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-02-13 DOI: 10.1007/s10714-025-03376-3
Richard Brito
{"title":"Black holes as laboratories: searching for ultralight fields","authors":"Richard Brito","doi":"10.1007/s10714-025-03376-3","DOIUrl":"10.1007/s10714-025-03376-3","url":null,"abstract":"<div><p>The interaction of black holes with classical fields can lead to many interesting phenomena such as black-hole superradiance and the superradiant instability. The existence of these effects has been shown to have implications for beyond Standard Model particles that could explain dark matter, namely ultralight bosonic fields. In this note I give a historical account of this topic and briefly go through some recent developments. I conclude with some personal reflections on the importance of constraining simple dark matter models, even if such models may ultimately be the incorrect description of nature.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03376-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143396693","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
The enigmatic gravitational partition function 神秘的重力配分函数
IF 2.1 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-02-13 DOI: 10.1007/s10714-024-03347-0
Batoul Banihashemi, Ted Jacobson
{"title":"The enigmatic gravitational partition function","authors":"Batoul Banihashemi,&nbsp;Ted Jacobson","doi":"10.1007/s10714-024-03347-0","DOIUrl":"10.1007/s10714-024-03347-0","url":null,"abstract":"<div><p>The saddle point approximation to formal quantum gravitational partition functions has yielded plausible computations of horizon entropy in various settings, but it stands on shaky ground. In this paper we visit some of that shaky ground, address some foundational questions, and describe efforts toward a more solid footing. We focus on the case of de Sitter horizon entropy which, it has been argued, corresponds to the dimension of the Hilbert space of a ball of space surrounded by the cosmological horizon.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143401452","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
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
{"title":"Non-static axisymmetric structures embedded in an asymptotically (Lambda )CDM universe","authors":"Gonzalo García-Reyes","doi":"10.1007/s10714-025-03359-4","DOIUrl":"10.1007/s10714-025-03359-4","url":null,"abstract":"<div><p>We construct non-static adiabatic axisymmetric structures embedded in an asymptotically <span>(Lambda )</span>CDM universe from given solutions of the Poisson’s equation of Newtonian gravity, using a particular form of the metric in isotropic coordinates. The approach is used in building of a razor-thin disk source made of perfect fluid for the McVittie metric, a system composite by a Plummer-type perfect fluid razor-thin disk surrounded by an halo also of perfect fluid, and a model of Miyamoto–Nagai-type anisotropic fluid thick disks, embedded in an asymptotic <span>(Lambda )</span>CDM universe. In the especial case of spherical symmetry, we also present a family of models of expanding anisotropic thick spherical shells. Moreover, the geodesic motion of test particles in stable circular orbits around of the structures, the fulfilment of the energy conditions and principal stresses (pressure) are analyzed.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03359-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143393167","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
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
{"title":"Thin shell wormhole from rotating hairy black hole in (2+1)-dimensions","authors":"Farook Rahaman,&nbsp;Nilofar Rahman,&nbsp;Mehedi Kalam,&nbsp;Masum Murshid,&nbsp;Amit Das,&nbsp;Sayeedul Islam,&nbsp;Shyam Das","doi":"10.1007/s10714-025-03371-8","DOIUrl":"10.1007/s10714-025-03371-8","url":null,"abstract":"<div><p>In this article, we theoretically construct a (2 + 1)-dimensional rotating thin shell wormhole using the Darmois-Israel junction formalism. This thin shell wormhole whose validity has been checked by analyzing the energy conditions, specifically, the weak and null energy conditions, is actually constructed by cutting and pasting two rotating hairy black hole spacetimes in (2+1)-dimensions. We further discuss different physical features of the constructed wormhole, viz., the nature of the gravitational field, the equation of state at the throat, and the time evolution of the throat radius. We also analyze the stability of the thin shell wormhole by investigating the equation of motion under small perturbations.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143369994","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
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
{"title":"Testing the nature of compact objects and the black hole paradigm","authors":"Mariafelicia De Laurentis,&nbsp;Paolo Pani","doi":"10.1007/s10714-025-03361-w","DOIUrl":"10.1007/s10714-025-03361-w","url":null,"abstract":"<div><p><i>Do compact objects other than black holes and neutron stars exist in the universe? Do all black holes conform with the predictions of Einstein’s General Relativity? Do classical black holes exist at all?</i> Future gravitational-wave observations and black-hole imaging might shed light on these foundational questions and deepen our understanding of the dark cosmos.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03361-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143370030","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
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,&nbsp;Nandan Roy,&nbsp;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
{"title":"Thermodynamic phase transition of Anti-de Sitter Reissner–Nordström black holes with exotic Einstein–Maxwell gravities","authors":"Hossein Ghaffarnejad,&nbsp;Elham Ghasemi","doi":"10.1007/s10714-025-03374-5","DOIUrl":"10.1007/s10714-025-03374-5","url":null,"abstract":"<div><p>To consider the inevitable cosmic magnetic effects instead of the unknown dark sector of matter/energy on the inflation phase of the expanding universe some authors have proposed several extended exotic Einstein–Maxwell gravities which are addressed in this work. Some of these exotic models include directional interaction terms between the electromagnetic vector field and the metric tensor field. We use one of them to investigate the physical effects of interaction terms on the thermodynamic behavior of the modified Reissner–Nordstrom (RN) black hole. We use the perturbation series method to find analytic solutions of the field equations because of the non-linearity of the field equations which cause they do not have analytic closed form solutions. We investigate possibility of the Hawking–Page and the small/large black hole phase transition and also, effects of the interaction part of the model on possibility of the coexistence of the several phases of the perturbed AdS RN black hole under consideration.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 2","pages":""},"PeriodicalIF":2.1,"publicationDate":"2025-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143184623","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
首页 上一页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信