Quantum emission from two-dimensional black holes

Journal Article · Tue Sep 15 00:00:00 EDT 1992 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.46.2486· OSTI ID:7027667

Giddings, S B; Nelson, W M ^[1]

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1. Department of Physics, University of California, Santa Barbara, California 93106-9530 (United States)

We investigate Hawking radiation from two-dimensional dilatonic black holes using standard quantization techniques. In the background of a collapsing black-hole solution the Bogoliubov coefficients can be exactly determined. In the regime after the black hole has settled down to an equilibrium'' state but before the back reaction becomes important these give the known result of a thermal distribution of Hawking radiation at a temperature {lambda}/2{pi}. The density matrix is computed in this regime and shown to be purely thermal. Similar techniques can be used to derive the stress tensor. The resulting expression agrees with the derivation based on the conformal anomaly and can be used to incorporate the back reaction. Corrections to the thermal density matrix are also examined, and it is argued that to leading order in perturbation theory the effect of the back reaction is to modify the Bogoliubov transformation, but not in a way that restores information lost to the black hole.

• DOE Contract Number: FG03-84ER40168
• OSTI ID: 7027667
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 46:6; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BLACK HOLES
PARTICLE PRODUCTION
QUANTUM FIELD THEORY
SPACE-TIME
COUPLING
DENSITY MATRIX
ENTROPY
PERTURBATION THEORY
QUANTIZATION
QUANTUM GRAVITY
RENORMALIZATION
SCALAR FIELDS
TWO-DIMENSIONAL CALCULATIONS
FIELD THEORIES
MATRICES
PHYSICAL PROPERTIES
THERMODYNAMIC PROPERTIES
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)