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Trace Anomaly of Dilaton Coupled Scalars in Two Dimensions

Raphael Bousso, Stephen Hawking

hep-tharXiv:hep-th/9705236

Abstract

Conformal scalar fields coupled to the dilaton appear naturally in two-dimensional models of black hole evaporation. We calculate their trace anomaly. It follows that an RST-type counterterm appears naturally in the one-loop effective action.

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