MODIFICATIONS OF THE BTZ BLACK-HOLE BY A DILATON AND SCALAR

We investigate some modifications of the static BTZ black hole solutio n due to a chosen asymptotically constant dilaton and scalar. New clas ses of static black hole solutions are obtained. One of the solutions contains the Martinez-Zanelli conformal black hole solution as a speci al case. Using the quasilocal formalism, we calculate their mass for a finite spatial region that contains the black hole. Their temperature s are also computed. Finally, using some of the curvature singularitie s as examples, we investigate whether or not a quantum particle behave s singularly.