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A standard insight of the AdS/CFT correspondence is that some aspects of the geometry of a bulk state are encoded in the entanglement structure of its dual boundary state. As entanglement is not a linear quantum observable, this means that…

高能物理 - 理论 · 物理学 2022-06-14 John G. Gardiner

I review the recent progress in providing a statistical foundation for black hole thermodynamics. In the context of string theory, one can now identify and count quantum states associated with black holes. One can also compute the analog of…

广义相对论与量子宇宙学 · 物理学 2008-02-03 Gary T. Horowitz

Within the Euclidean effective action approach we propose criteria for the ground state of QCD. Despite a nonvanishing field strength the ground state should be invariant with respect to modified Poincar\'e transformations consisting of a…

高能物理 - 唯象学 · 物理学 2011-07-19 M. Reuter , C. Wetterich

In mimetic gravity, we derive $D$-dimension charged black hole solutions having flat or cylindrical horizons with zero curvature boundary. The asymptotic behaviours of these black holes behave as (A)dS. We study both linear and nonlinear…

广义相对论与量子宇宙学 · 物理学 2019-02-06 G. G. L. Nashed , W. El Hanafy , Kazuharu Bamba

We numerically construct static localized black holes in five and six spacetime dimensions which are solutions to Einstein's vacuum field equations with one compact periodic dimension. In particular, we investigate the critical regime in…

广义相对论与量子宇宙学 · 物理学 2017-09-20 Michael Kalisch , Sebastian Moeckel , Martin Ammon

By using gravity/gauge correspondence, we employ an Einstein-Maxwell-Dilaton model to compute the equilibrium and out-of-equilibrium properties of a hot and baryon rich strongly coupled quark-gluon plasma. The family of 5-dimensional…

We discuss the dynamics of two harmonic oscillators of which one has a negative kinetic term. This model mimics the Hamiltonian in quantum geometrodynamics, which possesses an indefinite kinetic term. We solve for the time evolution in both…

广义相对论与量子宇宙学 · 物理学 2009-10-16 Claus Kiefer , Joao Marto , Paulo Vargas Moniz

Two-dimensional QCD is studied from the point of view of existence of multiple chirally noninvariant solutions to the mass-gap equation. The ground-state solution is reproduced and an infinite set of replica solutions is discovered for this…

高能物理 - 唯象学 · 物理学 2015-06-25 P. J. A. Bicudo , A. V. Nefediev

In this note we carry out the counting of states for a black hole in loop quantum gravity, however assuming an equidistant area spectrum. We find that this toy-model is exactly solvable, and we show that its behavior is very similar to that…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Hanno Sahlmann

We study the 5-dimensional Einstein-Yang-Mills system with a cosmological constant. Assuming a spherically symmetric spacetime, we find a new analytic black hole solution, which approaches asymptotically "quasi-Minkowski", "quasi anti-de…

广义相对论与量子宇宙学 · 物理学 2009-11-07 Naoya Okuyama , Kei-ichi Maeda

Motivated by Refs.[1, 2], we investigate whether quantum chromodynamics (QCD)-inspired matter at finite quark chemical potential can dynamically support \emph{regular} black-hole interiors during gravitational collapse. To this end, we…

高能天体物理现象 · 物理学 2026-05-27 G. Lambiase , A. Ovgun , V. Vertogradov

In recent times quantum corrections for N=2 black holes in 4 dimensions have been addressed in the framework of double extreme black hole solutions, which are characterised by constant scalar fields. In this paper we generalize these…

高能物理 - 理论 · 物理学 2009-10-30 Klaus Behrndt

We construct quartic quasitopological gravity, a theory of gravity containing terms quartic in the curvature that yields second order differential equations in the spherically symmetric case. Up to a term proportional to the quartic term in…

高能物理 - 理论 · 物理学 2015-05-30 M. H. Dehghani , A. Bazrafshan , R. B. Mann , M. R. Mehdizadeh , M. Ghanaatian , M. H. Vahidinia

The thesis develops a systematic procedure to construct semi-classical gravitational duals from quantum state manifolds. Though the systems investigated are simple quantum mechanical systems without gauge symmetry many familiar concepts…

高能物理 - 理论 · 物理学 2015-09-04 H. J. R. van Zyl

We present a generalization of the black hole solution with spherical symmetry already known in the literature for $N$-dimensional $F(R)$ gravity with a conformally invariant Maxwell field and constant scalar curvature $R$. This solution…

广义相对论与量子宇宙学 · 物理学 2022-04-21 Ernesto F. Eiroa , Griselda Figueroa-Aguirre

Holography relates gravitational theories in five dimensions to four-dimensional quantum field theories in flat space. Under this map, the equation of state of the field theory is encoded in the black hole solutions of the gravitational…

Polymer models have been used to describe non-singular quantum black holes, where the classical singularity is replaced by a transition from a black hole to a white hole. In a previous letter, in the context of a uni-parametric model with…

广义相对论与量子宇宙学 · 物理学 2025-04-15 I. P. R. Baranov , H. A. Borges , F. C. Sobrinho , S. Carneiro

Black hole solutions in pure quadratic theories of gravity are interesting since they allow to formulate a set of scale-invariant thermodynamics laws. Recently, we have proven that static scale-invariant black holes have a well-defined…

广义相对论与量子宇宙学 · 物理学 2015-07-24 Guido Cognola , Massimiliano Rinaldi , Luciano Vanzo

We use the quasilocal formalism of Brown and York, supplemented with counterterms, to investigate the thermodynamics of asymptotically flat black holes. We consider two families of exact regular black hole solutions, which are…

高能物理 - 理论 · 物理学 2024-04-25 Dumitru Astefanesei , Romina Ballesteros , Paulina Cabrera , Gonzálo Casanova , Raúl Rojas

In this paper, we look for the vacuum static spherically symmetric solution in the mimetic gravity scenario based on the conformal invariance principle. The trivial solution is a stealth Schwarzschild black hole with scalar hair where the…

广义相对论与量子宇宙学 · 物理学 2020-07-08 Mohammad Ali Gorji , Alireza Allahyari , Mohsen Khodadi , Hassan Firouzjahi
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