ON BLACK-HOLES IN THE THEORY OF DILATONIC GRAVITY COUPLED TO A SCALARFIELD

Taking advantage of the representation of dilatonic gravity with the R (2)-term in the form of low-derivative dilatonic gravity coupled to an additional scalar, we construct a general renormalizable model motiva ted by this theory. Exact black hole solutions are found for some spec ific versions of the model, and their thermodynamical properties are d escribed in detail. In particular, their horizons and temperatures are calculated. Finally, the corresponding one-loop effective action is o btained in the conformal gauge, and a number of its properties - inclu ding the construction of one-loop finite models - are briefly describe d.