搜索结果: 1-14 共查到“物理学 horizon”相关记录14条 . 查询时间(0.075 秒)
Hawking Radiation and Entropy from Horizon Degrees of Freedom
Hawking Radiation Entropy Horizon Degrees
2010/12/24
We study the thermodynamic properties of horizons using the dynamical description of the gravitational degrees of freedom at a horizon derived in an earlier work. We use the action of the horizon degr...
Finite entropy and energy are obtained for the horizon of a Rindler observer on the grounds of the nonstatic character of the geometry beyond the horizon. Edery - Constantineau prescription is used to...
Near Horizon Limits of Massless BTZ and Their CFT Duals
Near Horizon Limits Massless BTZ Their CFT Duals
2010/12/23
We consider the massless BTZ black hole and show that it is possible to take its "near horizon" limit in two distinct ways. The first one leads to a null self-dual orbifold of AdS3 and the second to a...
Rindler horizon entropy from nonstationarity
nonstationary metric field configurations horizon de-grees of freedom
2010/12/20
Finite entropy and energy are obtained for the horizon of a Rindler observer on the grounds of the nonstatic character of the geometry be-yond the horizon. Edery - Constantineau prescription is used t...
We present numerical simulations of a Kerr black hole perturbed by a pulse of ingoing gravitational radiation. For strong perturbations we find up to five concentric marginally outer trapped surfaces....
Hawking Radiation and Entropy from Horizon Degrees of Freedom
Hawking Radiation and Entropy Horizon Degrees of Freedom
2010/12/20
We study the thermodynamic properties of horizons using the dynamical description of the grav-
itational degrees of freedom at a horizon given in [4]. We use the action of the horizon degrees of free...
Dynamics of Diffeomorphism Degrees of Freedom at a Horizon
Dynamics of Diffeomorphism Degrees Freedom Horizon
2010/12/20
We define a set of boundary conditions that ensure the presence of a null hypersurface with the
essential characteristics of a horizon, using the formalism of weakly isolated horizons as a guide.We t...
Holographic entanglement entropy: near horizon geometry and disconnected regions
Holographic entanglement entropy horizon geometry disconnected regions
2010/12/22
We study the finite term of the holographic entanglement entropy for the charged black hole in AdS(d+2) and other examples of black holes when the spatial region in the boundary theory is given by one...
Equipartition of energy and the first law of thermodynamics at the apparent horizon
thermodynamics Equipartition of energy apparent horizon
2010/3/18
We apply the holographic principle and the equipartition law of energy to the apparent horizon
of a Friedmann-Robertson-Walker universe and derive the Friedmann equation describing the dy-
namics of...
Gravitational-wave signatures of the absence of an event horizon. II. Extreme mass ratio inspirals in the spacetime of a thin-shell gravastar
Gravitational-wave signatures event horizon thin-shell gravastar
2010/3/18
We study gravitational-wave emission from the quasi-circular, extreme mass ratio inspiral of compact objects of mass m0 into massive objects of mass M>>m0 whose external metric is identical to the Sch...
On the existence of cosmological event horizon
Cosmological horizon strong energy condition positive cosmological constant
2010/3/17
We show that, for general static or axisymmetric stationary spacetimes, a cosmological horizon exists only if $R_{ab}n^{a}n^{b}< 0$ for a hypersurface orthogonal timelike $n^{a}$, at least over some p...
We study the stability of the noncommutative Schwarzschild black hole interior by analysing the propagation of a massless scalar field between the two horizons. We show that the spacetime fuzziness tr...
Dynamical Horizon Entropy Bound Conjecture in Loop Quantum Cosmology
entropy bound conjecture Loop Quantum Cosmology
2010/3/17
The covariant entropy bound conjecture is an important hint for the quantum gravity, with several versions available in the literature. For cosmology, Ashtekar and Wilson-Ewing ever show the consisten...
Hawking Radiation of Dirac Particles on Rindler Horizon to a
Uniformly Accelerating Observer
Rindler horizon Dirac particles Dirac
equation Hawking radiation
2007/8/15
2003Vol.40No.2pp.244-246DOI:
Hawking Radiation of Dirac Particles on Rindler Horizon to a
Uniformly Accelerating Observer
ZHANG Jing-Yi
Department of Physics, Zhanjiang...