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Thermodynamic law and holography dual of accelerating and rotating black hole in Nariai limit Nariai极限下加速旋转黑洞的热力学定律与全息对偶
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-10-06 DOI: 10.1007/s10714-025-03472-4
Shu Luo
{"title":"Thermodynamic law and holography dual of accelerating and rotating black hole in Nariai limit","authors":"Shu Luo","doi":"10.1007/s10714-025-03472-4","DOIUrl":"10.1007/s10714-025-03472-4","url":null,"abstract":"<div><p>In this study, we investigate the thermodynamic law of accelerating and rotating black hole described by rotating C-metric, as well as holography properties in Nariai limit, which are related to Nariai-CFT and Kerr-CFT correspondence. In order to achieve this goal we define a regularized Komar mass with physical interpretation of varying the horizon area from spinless limit to general case, and derive the first law based on this construction through covariant phase space formalism. Serving for potential future studies, we also reduce the model to a 2-dimensional JT-type action and discuss some of its properties.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 10","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256196","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
From Nonextremal to Extremal: Entropy of Reissner-Nordström and Kerr black holes Revisited 从非极值到极值：重新审视Reissner-Nordström和Kerr黑洞的熵
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-10-04 DOI: 10.1007/s10714-025-03471-5
C. Fairoos, Chiranjeeb Singha
{"title":"From Nonextremal to Extremal: Entropy of Reissner-Nordström and Kerr black holes Revisited","authors":"C. Fairoos,&nbsp;Chiranjeeb Singha","doi":"10.1007/s10714-025-03471-5","DOIUrl":"10.1007/s10714-025-03471-5","url":null,"abstract":"<div><p>In this paper, we derive the entropy of Reissner-Nordström (RN) and Kerr black holes using the Hawking–Gibbons path integral method. We determine the periodicity of the Euclidean time coordinate using two approaches: first, by analyzing the near-horizon geometry, and second, by applying the Chern–Gauss–Bonnet (CGB) theorem. For non-extremal cases, both these methods yield a consistent and unique periodicity, which in turn leads to a well-defined expression for the entropy. In contrast, the extremal case exhibits a crucial difference. The absence of a conical structure in the near-horizon geometry implies that the periodicity of the Euclidean time is no longer uniquely fixed within the Hawking–Gibbons framework. The CGB theorem also fails to constrain the periodicity, as the corresponding Euler characteristic vanishes. As a result, the entropy cannot be uniquely determined using either method.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 10","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145256327","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
A class of charged and charged-Taub-NUT metrics in the presence of a massless scalar field and some of their astrophysical aspects 一类在无质量标量场存在下的带电和带电taub - nut度量及其天体物理方面的一些问题
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-09-24 DOI: 10.1007/s10714-025-03468-0
Fatemeh Sadeghi, Behrouz Mirza, Marzieh Moradzadeh
{"title":"A class of charged and charged-Taub-NUT metrics in the presence of a massless scalar field and some of their astrophysical aspects","authors":"Fatemeh Sadeghi,&nbsp;Behrouz Mirza,&nbsp;Marzieh Moradzadeh","doi":"10.1007/s10714-025-03468-0","DOIUrl":"10.1007/s10714-025-03468-0","url":null,"abstract":"<div><p>We consider a class of exact solutions to the Einstein equations in the presence of a scalar field, recently introduced in [1, 2], and derive their generalized form with dyonic charges using Harrison transformations. For specific parameter values, this class of metrics includes the charged Fisher-Janis-Newman-Winicour (FJNW) and Zipoy-Voorhees (ZV) metrics. We then investigate the motion of neutral particles in the background of these metrics and derive the corresponding effective potential. Next, by applying Ehlers transformations, we introduce the NUT parameter into the Reissner-Nordström (RN) metric in the presence of the scalar field. We also examine gravitational lensing, focusing on the effects of dyonic and NUT charges, as well as the scalar field, on the deflection angle of light. Finally, we explore the quasi-normal modes associated with this class of metrics.\u0000</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169237","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
The influence of a minimal length and accumulation of dark energy near the event horizon and the stability of a black hole 视界附近最小长度和暗能量积累对黑洞稳定性的影响
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-09-23 DOI: 10.1007/s10714-025-03469-z
L. Maglahoui, P. O. Hess
{"title":"The influence of a minimal length and accumulation of dark energy near the event horizon and the stability of a black hole","authors":"L. Maglahoui,&nbsp;P. O. Hess","doi":"10.1007/s10714-025-03469-z","DOIUrl":"10.1007/s10714-025-03469-z","url":null,"abstract":"<div><p>We investigate the influence of a minimal length and the accumulation of dark energy on the structure of black holes, for Schwarzschild and Kerr solutions. We show that near the event horizon the minimal length creates a region of negative temperature, resulting in a negative pressure, which counteracts a collapse. When dark energy is added, in addition the position of the event horizon will change and, depending on the size of the dark energy, stable dark stars are created. Our study ranges from standard black holes (no minimal length and no dark energy) to black holes with a minimal length and various radial intensities for the accumulation of dark energy. The dependence of the effects as a function of the black holes’s mass is studied. We find that a minimal length is possibly responsible for the suppression of primordial black holes.\u0000</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03469-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145110535","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
Topical Collection – Hyperboloidal foliations in the era of gravitational-wave astronomy: from mathematical relativity to astrophysics 专题文集-引力波天文学时代的双曲面叶理：从数学相对论到天体物理学
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-09-12 DOI: 10.1007/s10714-025-03466-2
David Hilditch, Rodrigo Panosso Macedo, Alex Vañó-Viñuales, Anıl Zenginoğlu
{"title":"Topical Collection – Hyperboloidal foliations in the era of gravitational-wave astronomy: from mathematical relativity to astrophysics","authors":"David Hilditch,&nbsp;Rodrigo Panosso Macedo,&nbsp;Alex Vañó-Viñuales,&nbsp;Anıl Zenginoğlu","doi":"10.1007/s10714-025-03466-2","DOIUrl":"10.1007/s10714-025-03466-2","url":null,"abstract":"","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145037348","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
Anisotropic Spacetimes in f(G)-gravity: Bianchi I, Bianchi III and Kantowski-Sachs Cosmologies f(G)-重力中的各向异性时空：Bianchi I， Bianchi III和Kantowski-Sachs宇宙论
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-09-06 DOI: 10.1007/s10714-025-03465-3
R. S. Bogadi, A. Giacomini, M. Govender, C. Hansraj, G. Leon, A. Paliathanasis
{"title":"Anisotropic Spacetimes in f(G)-gravity: Bianchi I, Bianchi III and Kantowski-Sachs Cosmologies","authors":"R. S. Bogadi,&nbsp;A. Giacomini,&nbsp;M. Govender,&nbsp;C. Hansraj,&nbsp;G. Leon,&nbsp;A. Paliathanasis","doi":"10.1007/s10714-025-03465-3","DOIUrl":"10.1007/s10714-025-03465-3","url":null,"abstract":"<div><p>We investigate the evolution of cosmological anisotropies within the framework of <span>(fleft( Gright) )</span>-gravity. Specifically, we consider a locally rotationally symmetric geometry in four-dimensional spacetime that describes the Bianchi I, Bianchi III, and the Kantowski-Sachs spacetimes. Within this context, we introduce a Lagrange multiplier which allows us to reformulate the geometric degrees of freedom in terms of a scalar field. The resulting theory is dynamically equivalent to an Einstein-Gauss-Bonnet scalar field model. We normalize the field equations by introducing dimensionless variables. The dynamics of our system is then explored by solving the resulting nonlinear differential equations numerically for various sets of initial conditions. Our analysis reveals the existence of two finite attractors: the Minkowski universe and an isotropic, spatially flat solution capable of describing accelerated expansion. Although de Sitter expansion may be recovered, it appears only as an unstable solution. In addition, the theory suffers from the existence of Big Rip singularities.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005490","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
Investigating the gravitational coupling of leptons via precision measurements of G 通过G的精确测量研究轻子的引力耦合
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-09-02 DOI: 10.1007/s10714-025-03459-1
Marco Bruschi, Per Grafström
{"title":"Investigating the gravitational coupling of leptons via precision measurements of G","authors":"Marco Bruschi,&nbsp;Per Grafström","doi":"10.1007/s10714-025-03459-1","DOIUrl":"10.1007/s10714-025-03459-1","url":null,"abstract":"<div><p>In recent decades, the precision of gravitational constant measurements has signifi-cantly improved. In this letter, we propose a method that takes advantage of the improved precision to measure in the laboratory whether leptons generate gravity in the same way as baryons. If leptons did not generate gravity, there would be a fractional difference in the value of the gravitational constant <i>G</i> expected for two different materials with different <span>(frac{Z}{A})</span> ratios, where <i>A</i> and <i>Z</i> represent the mass and atomic number, respectively. We propose suitable pairs of materials where such a difference could be detected at about <span>(4 sigma )</span> level given the precision in the present measurements of <i>G</i>.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 9","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144928678","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
The limits of cosmology 宇宙学的极限
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-08-27 DOI: 10.1007/s10714-025-03450-w
Joseph Silk
{"title":"The limits of cosmology","authors":"Joseph Silk","doi":"10.1007/s10714-025-03450-w","DOIUrl":"10.1007/s10714-025-03450-w","url":null,"abstract":"<div><p>The Moon is our future. It may seem like a chimera with a projected cost in excess of 100 billion$, and counting, dispensed on ARTEMIS with little to show to date. However it is the ideal site for the largest telescopes that we can dream about, at wavelengths spanning decimetric radio through optical to terahertz FIR. And it is these future telescopes that will penetrate the fundamental mysteries of the first hydrogen clouds, the first stars, the first galaxies, the first supermassive black holes, and the nearest habitable exoplanets. Nor does it stop there. Our lunar telescopes will take us back to the first months of the Universe, and even back to the first 10<span>(^{-36})</span> second after the Big Bang when inflation most likely occurred. Our lunar telescopes will provide high resolution images of exoplanets that are nearby Earth-like ’twins’ and provide an unrivalled attempt to answer the ultimate cosmic question of whether we are alone in the universe. Here I will set out my vision of the case for lunar astronomy over the next several decades.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03450-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144905046","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
Einstein-Yang-Mills Regular Black Holes in Rainbow Gravity 彩虹引力中的爱因斯坦-杨-米尔斯规则黑洞
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-08-21 DOI: 10.1007/s10714-025-03458-2
Celio R. Muniz, Francisco Bento Lustosa, Takol Tangphati
{"title":"Einstein-Yang-Mills Regular Black Holes in Rainbow Gravity","authors":"Celio R. Muniz,&nbsp;Francisco Bento Lustosa,&nbsp;Takol Tangphati","doi":"10.1007/s10714-025-03458-2","DOIUrl":"10.1007/s10714-025-03458-2","url":null,"abstract":"<div><p>In this work, we investigate regular black hole solutions in nonminimal Einstein-Yang-Mills theory modified by Rainbow Gravity, focusing on the impact of quantum gravity effects on their thermodynamics, particle emission, energy conditions, curvature, and shadow formation. We find that the rainbow parameter <span>(lambda )</span> alters Hawking’s temperature, entropy, and specific heat, leading to modified phase transitions and the possible formation of remnants. We also calculate the lower bound for the greybody factor demonstrating that particle emission is enhanced with increasing <span>(lambda )</span>, reflecting the behavior of the temperature and confirming the impact of the rainbow parameter on the evaporation process. Energy conditions are violated inside the black hole, with violations intensifying for larger <span>(lambda )</span>. We also show that Rainbow Gravity mitigates singularity formation by softening the curvature near the origin, contributing to the regularity of the solution. Finally, we have investigated the black hole shadow and shown that its radius can either increase or decrease as quantum gravity effects become more pronounced, depending on the specific parameter configuration. This behavior suggests that black hole shadow observations may offer a promising avenue for testing the phenomenological implications of Rainbow Gravity. These results highlight the role of Rainbow Gravity in modifying black hole physics and provides a framework for exploring quantum gravitational corrections in astrophysical scenarios.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144887988","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
Constraints on Quantum Gravity 量子引力的约束
IF 2.8 4区 物理与天体物理
General Relativity and Gravitation Pub Date : 2025-08-18 DOI: 10.1007/s10714-025-03455-5
Hirosi Ooguri
{"title":"Constraints on Quantum Gravity","authors":"Hirosi Ooguri","doi":"10.1007/s10714-025-03455-5","DOIUrl":"10.1007/s10714-025-03455-5","url":null,"abstract":"<div><p>Recently, it has become increasingly clear that there are constraints on the low-energy effective theories of quantum gravity that cannot be captured by the standard Wilsonian paradigm. For gravitational theories in asymptotically anti-de Sitter spacetimes, we can formulate such constraints and aim to prove or falsify them using the AdS/CFT correspondence. I will review the work I did with Daniel Harlow on constraints on symmetries of quantum gravity. I will also discuss more recent progress in this holographic approach, and present the proof that Yifan Wang and I completed this year, which proves and strengthens a part of the Distance Conjecture that I proposed with Cumrun Vafa in 2006.</p></div>","PeriodicalId":578,"journal":{"name":"General Relativity and Gravitation","volume":"57 8","pages":""},"PeriodicalIF":2.8,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10714-025-03455-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144861560","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
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