Results 31 to 40 of about 108,791 (169)
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
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Structural explanations in Minkowski spacetime: which account of models? [PDF]
, 2010 In this paper we argue that structural explanations are an effective way of explaining well known relativistic phenomena like length contraction and time dilation, and then try to understand how this can be possible by looking at the literature on ...
Felline, Laura +4 more
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From disformal electrodynamics to exotic spacetime singularities [PDF]
, 2023 We study different types of spacetime singularities which emerge in the context of disformal electrodynamics. The latter is characterized by transformations of the background metric which preserve regular (non-null) solutions of Maxwell equations in ...
Ottoni, José Eloy +3 more
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The orientability of spacetime [PDF]
, 2002 Contrary to established beliefs, spacetime may not be time-orientable. By considering an experimental test of time-orientability it is shown that a failure of time-orientability of a spacetime region would be indistinguishable from a particle ...
Hadley, Mark J., Mark J Hadley
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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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, 2015 In this paper we classify simple parametrisations of complex curve singularities of arbitrary embedding dimension. Simple means that all neighbouring singularities fall in finitely many equivalence classes.
Stevens, Jan, Stevens, Jan,
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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
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Restricted Maximin surfaces and HRT in generic black hole spacetimes
Journal of High Energy Physics, 2019 The AdS/CFT understanding of CFT entanglement is based on HRT surfaces in the dual bulk spacetime. While such surfaces need not exist in sufficiently general spacetimes, the maximin construction demonstrates that they can be found in any smooth ...
Donald Marolf +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
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