Results 41 to 50 of about 1,803 (203)
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
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
doaj +1 more source
Towards Black-Hole Singularity-Resolution in the Lorentzian Gravitational Path Integral
Universe, 2021 Quantum gravity is expected to resolve the singularities of classical general relativity. Based on destructive interference of singular spacetime-configurations in the path integral, we find that higher-order curvature terms may allow to resolve black ...
Johanna N. Borissova, Astrid Eichhorn
doaj +1 more source
Berichte zur Wissenschaftsgeschichte, EarlyView.I present and discuss two drafts of remarks prepared by the mathematician Hermann Minkowski (1864–1909). They were composed in December 1907 while preparing his paper on the “Basic Equations of Electromagnetic Processes in Moving Bodies” for publication in the Proceedings of the Göttingen Academy of Sciences.
Tilman Sauer
wiley +1 more source
Global Spacetime Structure [PDF]
, 2011 Here, we outline the basic structure of relativistic spacetime and record a number of facts. We then consider a distinction between local and global spacetime properties and provide important examples of each.
Manchak, John Byron
core
The structure of quantum singularities on a Cauchy horizon
Journal of High Energy PhysicsSpacetime singularities pose a long-standing puzzle in quantum gravity. Unlike Schwarzschild, a generic family of black holes gives rise to a Cauchy horizon on which, even in the Hartle-Hawking state, quantum observables such as ⟨T μν ⟩ — the expectation
Arvin Shahbazi-Moghaddam
doaj +1 more source
Weak cosmic censorship with self-interacting scalar and bound on charge to mass ratio
Journal of High Energy Physics, 2021 We study the model of four-dimensional Einstein-Maxwell-Λ theory minimally coupled to a massive charged self-interacting scalar field, parameterized by the quartic and hexic couplings, labelled by λ and β, respectively.
Yan Song, Tong-Tong Hu, Yong-Qiang Wang
doaj +1 more source
The regulation of stem cell fate and its application in neural regeneration
Interdisciplinary Medicine, EarlyView.Regulating stem cell fate is crucial for neural regeneration. This review summarizes key physical, biological, and chemical strategies and their applications in repairing nerve injuries, providing new insights for regenerative medicine. Abstract Regulating the fate of stem cells (SCs) is a key technical problem in the field of regenerative medicine and
Yuexin He +3 more
wiley +1 more source
D-dimensional charged Anti-de-Sitter black holes in f (T) gravity
Journal of High Energy Physics, 2017 We present a D-dimensional charged Anti-de-Sitter black hole solutions in f (T) gravity, where f (T) = T + βT 2 and D ≥ 4. These solutions are characterized by flat or cylindrical horizons.
A.M. Awad, S. Capozziello, G.G.L. Nashed
doaj +1 more source
Supersymmetric traversable wormholes
Journal of High Energy Physics, 2020 We study traversable wormhole solutions in pure gauged N = 2 supergravity with and without electromagnetic fields, which are locally isometric under SO(2, 1) × SO(1, 1). The model allows for 1/2-BPS wormhole solutions whose corresponding globally defined
Andrés Anabalón +2 more
doaj +1 more source