Trace anomaly of dilaton-coupled scalars in two dimensions

Raphael Bousso, Stephen Hawking
1997 Physical Review D, Particles and fields  
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.
doi:10.1103/physrevd.56.7788 fatcat:n2o56r767jg4basqbilge3ghum