Black Hole Radiation (with and) without Weyl Anomaly

Abstract

In the semiclassical analysis of black hole radiation in matter-coupled dilaton gravity, a one-parameter ``$k$"-family of measures for the path integral quantization of the matter fields is considered. The Weyl anomaly is proportional to the parameter $k$, but the black hole radiation seen by minkowskian observers at future null infinity is $k$-independent.

13 pages, LaTex. [Typographical error in Eq.(36) was corrected. Comments on the relation between our 2D-gravity results and some known results on the chiral Schwinger model were added. Two references were added.]

References in corpus (4)

• Area-preserving structure of 2d-gravity
• Weyl Invariance and Black Hole Evaporation
• Area-preserving Structure and Anomalies in 1+1-dimensional Quantum Gravity
• $\zeta$-function calculation of the Weyl determinant for two-dimensional non-abelian gauge theories in a curved background and its W-Z-W terms

Cited by in corpus (9)

• Anomalies of the Achucarro-Ortiz black hole
• Hawking radiation by Kerr black holes and conformal symmetry
• Solvable Models for radiating Black Holes and Area-preserving Diffeomorphisms
• Conformal equivalence of 2D dilaton gravity models
• Weyl Invariance and Black Hole Evaporation
• A note on Weyl transformations in two-dimensional dilaton gravity
• KPZ Formulas for Weyl-Invariant Induced Gravity and Topologically Massive Gravity
• Quantisation of 2D-gravity with Weyl and area-preserving diffeomorphism invariances
• The Quantization of Anomalous Gauge Field Theory and BRST-invariant Models of Two Dimensional Quantum Gravity