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相关论文: Quantum horizons and black hole entropy: Inclusion…

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Equilibrium states of black holes can be modelled by isolated horizons. If the intrinsic geometry is spherical, they are called type I while if it is axi-symmetric, they are called type II. The detailed theory of geometry of quantum type I…

广义相对论与量子宇宙学 · 物理学 2009-11-11 Jonathan Engle

Isolated horizons model equilibrium states of classical black holes. A detailed quantization, starting from a classical phase space restricted to spherically symmetric horizons, exists in the literature and has since been extended to…

广义相对论与量子宇宙学 · 物理学 2010-11-19 Christopher Beetle , Jonathan Engle

We give an account of the state of the art about black hole entropy in Loop Quantum Gravity. This chapter contains a historical summary and explains how black hole entropy is described by relying on the concept of isolated horizon, with an…

广义相对论与量子宇宙学 · 物理学 2022-12-29 J. Fernando Barbero G. , Daniele Pranzetti

Quantum Geometry (the modern Loop Quantum Gravity using graphs and spin-networks instead of the loops) provides microscopic degrees of freedom that account for the black-hole entropy. However, the procedure for state counting used in the…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Marcin Domagala , Jerzy Lewandowski

The quasi-local notion of an isolated horizon is employed to study the entropy of black holes without any particular symmetry in loop quantum gravity. The idea of characterizing the shape of a horizon by a sequence of local areas is…

广义相对论与量子宇宙学 · 物理学 2021-11-02 Shupeng Song , Haida Li , Yongge Ma , Cong Zhang

In loop quantum gravity, the quantum geometry of a black hole horizon consist of discrete non-perturbative quantum geometric excitations (or punctures) labeled by spins, which are responsible for the quantum area of the horizon. If these…

广义相对论与量子宇宙学 · 物理学 2016-11-07 Abhishek Majhi

A `black hole sector' of non-perturbative canonical quantum gravity is introduced. The quantum black hole degrees of freedom are shown to be described by a Chern-Simons field theory on the horizon. It is shown that the entropy of a large…

广义相对论与量子宇宙学 · 物理学 2009-10-30 A. Ashtekar , J. Baez , A. Corichi , K. Krasnov

We present an overall picture of the advances in the description of black hole physics from the perspective of loop quantum gravity. After an introduction that discusses the main conceptual issues we present some details about the classical…

广义相对论与量子宇宙学 · 物理学 2015-01-14 J. Fernando Barbero G. , Alejandro Perez

Quantum black holes within the loop quantum gravity (LQG) framework are considered. The number of microscopic states that are consistent with a black hole of a given horizon area $A_0$ are counted and the statistical entropy, as a function…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Alejandro Corichi , Jacobo Diaz-Polo , Enrique Fernandez-Borja

We give a short introduction to the approaches currently used to describe black holes in loop quantum gravity. We will concentrate on the classical issues related to the modeling of black holes as isolated horizons, give a short discussion…

广义相对论与量子宇宙学 · 物理学 2021-03-19 J. Fernando Barbero G. , Jerzy Lewandowski , Eduardo J. S. Villaseñor

The black hole entropy calculation for type I isolated horizons, based on loop quantum gravity, is extended to include non-minimally coupled scalar fields. Although the non-minimal coupling significantly modifies quantum geometry, the…

广义相对论与量子宇宙学 · 物理学 2009-11-10 Abhay Ashtekar , Alejandro Corichi

To ask a question about a black hole in quantum gravity, one must restrict initial or boundary data to ensure that a black hole is actually present. For two-dimensional dilaton gravity, and probably a much wider class of theories as well,…

广义相对论与量子宇宙学 · 物理学 2009-11-11 S. Carlip

The entropy of a black hole can be obtained by counting states in loop quantum gravity. The dominant term depends on the Immirzi parameter involved in the quantization and is proportional to the area of the horizon, while there is a…

广义相对论与量子宇宙学 · 物理学 2007-05-23 A. Ghosh , P. Mitra

In the Loop Quantum Gravity, black holes (or even more general Isolated Horizons) are described by a SU(2) Chern-Simons theory. There is an equivalent formulation of the horizon degrees of freedom in terms of a U(1) gauge theory which is…

广义相对论与量子宇宙学 · 物理学 2012-02-09 Romesh K. Kaul

A proper counting of states for black holes in the quantum geometry approach shows that the dominant configuration for spins are distributions that include spins exceeding one-half at the punctures. This raises the value of the Immirzi…

广义相对论与量子宇宙学 · 物理学 2009-11-10 A. Ghosh , P. Mitra

In the context of loop quantum gravity, we construct the phase-space of isolated horizons with genus greater than 0. Within the loop quantum gravity framework, these horizons are described by genus g surfaces with N punctures and the…

广义相对论与量子宇宙学 · 物理学 2008-11-26 S. Kloster , J. Brannlund , A. DeBenedictis

Using the earlier developed classical Hamiltonian framework as the point of departure, we carry out a non-perturbative quantization of the sector of general relativity, coupled to matter, admitting non-rotating isolated horizons as inner…

广义相对论与量子宇宙学 · 物理学 2007-05-23 A. Ashtekar , J. Baez , K. Krasnov

We review our recent proposal of a method to extend the quantization of spherically symmetric isolated horizons, a seminal result of loop quantum gravity, to a phase space containing horizons of arbitrary geometry. Although the details of…

广义相对论与量子宇宙学 · 物理学 2015-06-03 Jonathan Engle , Christopher Beetle

A detailed analysis of the spherically symmetric isolated horizon system is performed in terms of the connection formulation of general relativity. The system is shown to admit a manifestly SU(2) invariant formulation where the (effective)…

广义相对论与量子宇宙学 · 物理学 2014-11-21 Jonathan Engle , Karim Noui , Alejandro Perez , Daniele Pranzetti

We argue, using methods taken from the theory of noiseless subsystems in quantum information theory, that the quantum states associated with a Schwarzchild black hole live in the restricted subspace of the Hilbert space of horizon boundary…

高能物理 - 理论 · 物理学 2010-04-05 Olaf Dreyer , Fotini Markopoulou , Lee Smolin
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