BLACK-HOLES FROM GENERALIZED CHATTERJEE SOLUTIONS IN DILATON GRAVITY

In the framework of the dilaton gravity theory, we consider the Papapetrou metric together with the harmonic maps ansatz in order to find exact solutions for the field equations of the theory. By this means a generalized four-dimensional solution is obtained which for definite values of the dilaton coupling constant (alpha) reduces to solutions of the four-dimensional Einstein-Dilaton theory, low energy strings models and Kaluza-Klein theories. In particular, for the last case it contains the four-dimensional version of the well-known Chatterjee solution.