부산대학교 도서관

Summary: ``We investigate the qualitative new features of chargeddilatonic black holes which emerge when both the Yang-Mills andGauss-Bonnet curvature corrections are included in the effectiveaction. We consider these perturbative effects by an expansion up tosecond order in the inverse string tension on the four-dimensionalSchwarzschild background and determine the back reaction. Wecalculate the thermodynamical functions and show that they can behavelike those of the Garfinkle-Horowitz-Strominger solution or in a moreconventional way, depending on the value of the magnetic charge $q$.Moreover, we find that for magnetic charge above a critical value, thetemperature of the black hole has a maximum and goes to zero for afinite value of the mass. This indicates that the conventionalHawking evaporation law is modified by string theory at a classical level.''