Showing 281 - 300 results of 368 for search '"black hole"', query time: 0.05s Refine Results
  1. 281

    A Note on Holography and Phase Transitions by Marc Bellon, Enrique F. Moreno, Fidel A. Schaposnik

    Published 2011-01-01
    “…Focusing on the connection between the Landau theory of second-order phase transitions and the holographic approach to critical phenomena, we study diverse field theories in an anti de Sitter black hole background. Through simple analytical approximations, solutions to the equations of motion can be obtained in closed form which give rather good approximations of the results obtained using more involved numerical methods. …”
    Get full text
    Article
  2. 282

    An Interior Solution for the Kerr Metric: A Novel Approach by Yu-Ching Chou

    Published 2025-01-01
    “…Our findings reveal anisotropic fluid properties and energy condition behaviors in specific space-time regions, providing insights into the strong-field regime of rotating black holes. The proposed solution offers a more realistic description of rotating black hole interiors, with implications for understanding compact astrophysical objects.…”
    Get full text
    Article
  3. 283

    Complexity geometry and Schwarzian dynamics by Henry W. Lin, Leonard Susskind

    Published 2020-01-01
    “…In many setups, this “Schwarzian” variable can be interpreted as the extremal volume of the dual black hole, and the resulting dynamics is simply that of a 1D Newtonian particle in an exponential potential. …”
    Get full text
    Article
  4. 284

    La topographie légendaire des itinéraires de la navette by Xavière Lanéelle

    Published 2015-06-01
    “…The commuter, the train and the route have been the object of a myth to serve a commercial policy as well as a development of the served cities.But the legend settled down only because it is one of the anthropological foundations and because the myth allows to combine incompatible elements, here the combination of the requirements of contemporary modernity and a more traditional life of provincial rooting.One of the aspects of the myth is that the TGV is a sterile environment and the countryside it goes through, a "black hole". Is it really the case ? Social practices and memory reinvest places and sometimes invent them. …”
    Get full text
    Article
  5. 285

    Spontaneous Lorentz symmetry-breaking constraints in Kalb–Ramond gravity by Ednaldo L. B. Junior, José Tarciso S. S. Junior, Francisco S. N. Lobo, Manuel E. Rodrigues, Diego Rubiera-Garcia, Luís F. Dias da Silva, Henrique A. Vieira

    Published 2024-12-01
    “…Abstract In this work, we study timelike and lightlike geodesics in Kalb–Ramond (KR) gravity around a black hole with the goal of constraining the Lorentz symmetry-breaking parameter l. …”
    Get full text
    Article
  6. 286

    Multiwavelength Variability Analysis of the Blazar PKS 0727-11: An ~ 168 day Quasiperiodic Oscillation in the γ-Ray by Yuncai Shen, Tingfeng Yi, Vinit Dhiman, Lisheng Mao, Liang Dong

    Published 2025-01-01
    “…We demonstrate that QPO arising from the non-ballistic helical jet motion driven by the orbital motion in a supermassive binary black hole is a plausible physical explanation. In this scenario, the estimated mass of the primary black hole is M ∼ 3.66 × 10 ^8 –5.79 × 10 ^9 M _⊙ .…”
    Get full text
    Article
  7. 287

    Graviatoms with de Sitter Interior by Irina Dymnikova, Michael Fil’chenkov

    Published 2013-01-01
    “…It is a gravitationally bound quantum system consisting of a nucleus represented by a regular primordial black hole (RPBH), its remnant or gravitational vacuum soliton G-lump, and a charged particle. …”
    Get full text
    Article
  8. 288

    Nos « silences construits » : nommer la violence épistémique au fondement de la théorie queer by Camille Back

    Published 2024-07-01
    “…After exposing the epistemic violence of its “founding” texts, I will reinvest the metaphor of the “black hole” suggested by Evelynn Hammonds in “Black (W)holes and the Geometry of Black Female Sexuality” (1994) in order to take into consideration not only our “constructed silences”, but also our blank spots. …”
    Get full text
    Article
  9. 289

    Weak Minimal Area in Entanglement Entropy by Shesansu Sekhar Pal, Shubhalaxmi Rath

    Published 2015-01-01
    “…The necessary condition for the weak minimality is checked via Legendre test and its sufficient nature via Jacobi test. We show for AdS black hole with a strip type entangling region that it is this minimality condition that makes the hypersurface unable to cross the horizon, which is in agreement with that studied earlier by Engelhardt et al. and Hubeny using a different approach. …”
    Get full text
    Article
  10. 290

    Instability of Cauchy horizon induced by the graviton mass by Lu Chen, Shun Jiang

    Published 2025-01-01
    “…In the context of considering massless scalar field perturbations in a charged static black hole, our paper explores the impact of graviton mass on the stability of the Cauchy horizon. …”
    Get full text
    Article
  11. 291

    Generalising Holographic Superconductors by Andrea Donini, Víctor Enguita-Vileta, Fabian Esser, Veronica Sanz

    Published 2022-01-01
    “…Using a semianalytical procedure to compute the superconductor properties, we are able to further generalise the geometric description of the hologram beyond the AdS-Schwarzschild Black Hole paradigm and propose a set of higher-dimensional metrics which exhibit the same universal behaviour. …”
    Get full text
    Article
  12. 292

    Lorentz Invariance Violation and Modified Hawking Fermions Tunneling Radiation by Shu-Zheng Yang, Kai Lin, Jin Li, Qing-Quan Jiang

    Published 2016-01-01
    “…In this paper, the modified Dirac equation has been generalized in curved spacetime, and then fermion tunneling of black holes is researched under this correctional Dirac field theory. …”
    Get full text
    Article
  13. 293

    Modified Newton's Law of Gravitation due to Minimal Length in Quantum Gravity by Ahmed Farag Ali, A. Tawfik

    Published 2013-01-01
    “…In this work, we discuss the effects of generalized uncertainty principle (GUP) which is proposed by some approaches to quantum gravity such as string theory, black hole physics, and doubly special relativity theories (DSR), on the area law of the entropy. …”
    Get full text
    Article
  14. 294

    Field Equations and Radial Solutions in a Noncommutative Spherically Symmetric Geometry by Aref Yazdani

    Published 2014-01-01
    “…This new line element interestingly reaffirms the coherent state theory for a noncommutative Schwarzschild black hole. For the first time, we derive the Newtonian gravitational force equation in the commutative relativity framework, and this result could provide the possibility to investigate examples in various topics in quantum and ordinary theories of gravity.…”
    Get full text
    Article
  15. 295

    Secure and high throughput routing protocol with QoS constraints in cognitive wireless Mesh networks by Zhu-fang KUANG, Zhi-gang CHEN, Guo-jun WANG, Hui LIU

    Published 2014-11-01
    “…A routing metric SIEB which includes link security,link conflict,link reliability and link available bandwidth was proposed.The SIEB includes link security and link performance two aspects.In order to resist various hole attack,the link trust value based on two hop neighbor feedback is computed in link security weight computing of SIEB.On this basis,a link security weight computing algorithm LSWC and a link performance weight computing algorithm LSPC were proposed,and a distributed routing protocol SIEBP with QoS constraints in cognitive wireless Mesh network was proposed.Finding safety routing path and maximizing the network throughput are the objective of SIEBP.Simulation results show that SIEBP routing protocol can achieve expectation goal.It can not only find safety routing path which can resist black hole attack,gray hole attack and worm hole attack,but also obtain a higher network throughput.…”
    Get full text
    Article
  16. 296

    A Possible Solution of the Cosmological Constant Problem Based on GW170817 and Planck Observations with Minimal Length Uncertainty by Abdel Magied Diab, Abdel Nasser Tawfik

    Published 2022-01-01
    “…We propose generalized uncertainty principle (GUP) with an additional term of quadratic momentum motivated by string theory and black hole physics and providing a quantum mechanical framework for the minimal length uncertainty, at the Planck scale. …”
    Get full text
    Article
  17. 297

    Why the Length of a Quantum String Cannot Be Lorentz Contracted by Antonio Aurilia, Euro Spallucci

    Published 2013-01-01
    “…In the latter case, we determine the critical boost that separates the ordinary “particle phase,” characterized by the Compton wavelength, from the “black hole phase,” characterized by the effective Schwarzschild radius of the colliding system.…”
    Get full text
    Article
  18. 298

    F(R) Gravity’s Rainbow and Its Einstein Counterpart by S. H. Hendi, B. Eslam Panah, S. Panahiyan, M. Momennia

    Published 2016-01-01
    “…In this paper, we introduce charged black hole solutions with power Maxwell invariant source in the context of gravity’s rainbow. …”
    Get full text
    Article
  19. 299

    AGN Obscuration and the Unified Model by Stefano Bianchi, Roberto Maiolino, Guido Risaliti

    Published 2012-01-01
    “…In this paper, we review the various pieces of evidence for obscuring media on different scales, from the vicinity of the black hole to the host galaxy, in order to picture an updated unification scenario explaining the complex observed phenomenology. …”
    Get full text
    Article
  20. 300

    Minimum asymptotic energy of a charged spherically symmetric thin-shell wormhole and its stability by S. Habib Mazharimousavi

    Published 2025-02-01
    “…Abstract The static spherically symmetric thin shell of proper mass m and electric charge q around a central star or black hole of mass M is in general unstable. Although with fine-tuned m, q,  and M it can be considered quasi-stable. …”
    Get full text
    Article