Results 31 to 40 of about 35,096 (197)
Currents and radiation from the large D black hole membrane
Journal of High Energy Physics, 2017 It has recently been demonstrated that black hole dynamics in a large number of dimensions D reduces to the dynamics of a codimension one membrane propagating in flat space.
Sayantani Bhattacharyya +6 more
doaj +1 more source
Blow-up for solutions of hyperbolic PDE and spacetime singularities [PDF]
, 2000 An important question in mathematical relativity theory is that of the nature of spacetime singularities. The equations of general relativity, the Einstein equations, are essentially hyperbolic in nature and the study of spacetime singularities is ...
Rendall, Alan D.
core +5 more sources
Resolving spacetime singularities in flux compactifications & KKLT [PDF]
Journal of High Energy Physics, 2021 Abstract In flux compactifications of type IIB string theory with D3 and seven-branes, the negative induced D3 charge localized on seven-branes leads to an apparently pathological profile of the metric sufficiently close to the source. With the volume modulus stabilized in a KKLT de Sitter vacuum this pathological region takes over
Federico Carta, Jakob Moritz
openaire +5 more sources
Probing phase structure of black holes with Lyapunov exponents
Journal of High Energy Physics, 2022 We conjecture that there exists a relationship between Lyapunov exponents and black hole phase transitions. To support our conjecture, Lyapunov exponents of the motion of particles and ring strings are calculated for Reissner-Nordström-AdS black holes ...
Xiaobo Guo +3 more
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Quantum vacuum effects on the formation of black holes
Journal of High Energy Physics, 2023 We study the backreaction of quantum fields induced through the vacuum polarization and the conformal anomaly on the collapse of a thin shell of dust. It is shown that the final fate of the collapse process depends on the physical properties of the shell,
Moslem Shafiee, Yousef Bahrampour
doaj +1 more source
Dual geometries and spacetime singularities [PDF]
, 2000 The notion of geometrical duality is discussed in the context of both Brans-Dicke theory and general relativity. It is shown that, in some particular solutions, the spacetime singularities that arise in usual Riemannian general relativity may be avoided ...
A. Agnese +20 more
core +2 more sources
Visible borders of spacetime generated by high-energy collisions
, 2010 Several years ago, two of the present authors proposed the concept of the border of spacetime as a generalization of spacetime singularities. Visible borders of spacetime, which replace naked singularities of classical theory, are not only necessary for ...
Harada, Tomohiro +2 more
core +1 more source
Journal of High Energy Physics, 2022 Thermal partition functions for gravitational systems have traditionally been studied using Euclidean path integrals. But in Euclidean signature the gravitational action suffers from the conformal factor problem, which renders the action unbounded below.
Donald Marolf
doaj +1 more source
Black hole thermodynamics with conical defects
Journal of High Energy Physics, 2017 Recently we have shown [1] how to formulate a thermodynamic first law for a single (charged) accelerated black hole in AdS space by fixing the conical deficit angles present in the spacetime.
Michael Appels +2 more
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Inner horizon instability and the unstable cores of regular black holes
Journal of High Energy Physics, 2021 Regular black holes with nonsingular cores have been considered in several approaches to quantum gravity, and as agnostic frameworks to address the singularity problem and Hawking’s information paradox.
Raúl Carballo-Rubio +4 more
doaj +1 more source