STATIC CHARGED BLACK-HOLES IN (2-DIMENSIONAL DILATON GRAVITY(1))

A one-parameter family of static charged black hole solutions in (2 1) dimensional. general relativity minimally coupled to a dilaton phi proportional to ln(r/beta) with a potential term e(b phi)Lambda is obt ained. Their causal strutures are investigated, and the thermodynamica l temperature and entropy are computed. One particular black hole in t he family has the same thermodynamical properties as the Schwarzschild black hole in 3+1 dimensions. Solutions with cosmological horizons ar e also discussed; Finally, a class of black holes arising from the dil aton with a negative kinetic term (tachyon) is briefly discussed.