scholarly journals String propagation in an exact four-dimensional black hole background

1997 ◽  
Vol 55 (10) ◽  
pp. 6403-6408 ◽  
Author(s):  
Swapna Mahapatra
Keyword(s):  
Black Hole ◽  
Black Hole Background ◽  
Dimensional Black Hole ◽  
String Propagation

scholarly journals STRING SCATTERING OFF THE (2 + 1)-DIMENSIONAL ROTATING BLACK HOLE

1996 ◽  
Vol 11 (18) ◽  
pp. 1467-1473 ◽  
Author(s):  
MAKOTO NATSUUME ◽  
NORISUKE SAKAI ◽  
MASAMICHI SATO
Keyword(s):  
Black Hole ◽  
De Sitter Space ◽  
Hawking Temperature ◽  
Bogoliubov Transformation ◽  
De Sitter ◽  
Rotating Black Hole ◽  
Black Hole Background ◽  
Dimensional Black Hole

The SL (2, R)/Z WZW orbifold which describes the (2+1)-dimensional black hole approaching anti-de Sitter space asymptotically. We study the 1 → 1 tachyon scattering off the rotating black hole background and calculate the Hawking temperature using the Bogoliubov transformation.

D-branes behind the horizon

2007 ◽  
Vol 85 (6) ◽  
pp. 619-623
Author(s):  
M Rozali
Keyword(s):  
Black Hole ◽  
Matrix Model ◽  
Two Dimensional ◽  
Black Hole Background ◽  
Dimensional Black Hole ◽  
Asymptotic Observer

We review the study of D-particles in the two-dimensional black-hole background, concentrating on aspects of the dynamics that are sensitive to the region behind the horizon. Surprisingly, the portion of the trajectory behind the horizon appears to an asymptotic observer as ghost D-particle. This suggests a way of constructing a matrix model for the Lorentzian black-hole background. PACS No.: 11.25.Uv

scholarly journals MATRIX MODELS AND NON-PERTURBATIVE STRING PROPAGATION IN TWO-DIMENSIONAL BLACK HOLE BACKGROUNDS

1993 ◽  
Vol 08 (14) ◽  
pp. 1331-1341 ◽  
Author(s):  
SUMIT R. DAS
Keyword(s):  
Black Hole ◽  
Wave Function ◽  
String Theory ◽  
Matrix Models ◽  
Matrix Model ◽  
Asymptotic Region ◽  
Two Dimensional ◽  
White Hole ◽  
Dimensional Black Hole ◽  
String Propagation

We identify a quantity in the c = 1 matrix model which describes the wave function for physical scattering of a tachyon from a black hole of the two-dimensional critical string theory. At the semiclassical level this quantity corresponds to the usual picture of a wave coming in from infinity, part of which enters the black hole becoming singular at the singularity, while the rest is scattered back to infinity, with nothing emerging from the white hole. We find, however, that the exact non-perturbative wave function is non-singular at the singularity and appears to end up in the asymptotic region "behind" the singularity.

scholarly journals Quantum scalar field on the massless(2+1)-dimensional black hole background

1999 ◽  
Vol 59 (10) ◽  
Author(s):  
Daniele Binosi ◽  
Valter Moretti ◽  
Luciano Vanzo ◽  
Sergio Zerbini
Keyword(s):  
Black Hole ◽  
Scalar Field ◽  
Black Hole Background ◽  
Dimensional Black Hole

scholarly journals STRINGY QUANTUM EFFECTS IN TWO-DIMENSIONAL BLACK HOLE

1992 ◽  
Vol 07 (39) ◽  
pp. 3703-3715 ◽  
Author(s):  
AVINASH DHAR ◽  
GAUTAM MANDAL ◽  
SPENTA R. WADIA
Keyword(s):  
Black Hole ◽  
Semiclassical Approximation ◽  
Classical Equation ◽  
Quantum Effects ◽  
Equation Of Motion ◽  
Two Dimensional ◽  
Black Hole Singularity ◽  
Black Hole Background ◽  
Classical Singularity ◽  
Dimensional Black Hole

We discuss the classical two-dimensional black hole in the framework of the non-perturbative formulation (in terms of non-relativistic fermions) of c=1 string field theory. We identify an off-shell operator whose classical equation of motion is that of tachyon in the classical graviton-dilaton black hole background. The black hole ‘singularity’ is identified with the Fermi surface in the phase space of a single fermion, and as such is a consequence of the semiclassical approximation. An exact treatment reveals that stringy quantum effects wash away the classical singularity.

scholarly journals ENERGY AND MOMENTUM DISTRIBUTIONS OF A (2+1)-DIMENSIONAL BLACK HOLE BACKGROUND

2003 ◽  
Vol 18 (32) ◽  
pp. 5949-5963 ◽  
Author(s):  
ELIAS C. VAGENAS
Keyword(s):  
Black Hole ◽  
Cosmological Constant ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Black Hole Background ◽  
Momentum Distributions ◽  
Dimensional Black Hole ◽  
Energy And Momentum ◽  
Gravitational Background

Using Einstein, Landau–Lifshitz, Papapetrou and Weinberg energy–momentum complexes, we explicitly evaluate the energy and momentum distributions associated with a nonstatic and circularly symmetric three-dimensional space–time. The gravitational background under study is an exact solution of Einstein's equations in the presence of a cosmological constant and a null fluid. It can be regarded as the three-dimensional analogue of the Vaidya metric and represents a nonstatic spinless (2+1)-dimensional black hole with an outflux of null radiation. All four above-mentioned prescriptions give exactly the same energy and momentum distributions for the specific black hole background. Therefore, the results obtained here provide evidence in support of the claim that for a given gravitational background, different energy–momentum complexes can give identical results in three dimensions. Furthermore, in the limit of zero cosmological constant, the results presented here reproduce those obtained by Virbhadra. He utilized the Landau–Lifshitz energy–momentum complex for the same (2+1)-dimensional black hole background in the absence of a cosmological constant.

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