Nonminimally coupled massive scalar field in a 2D black hole: Exactly solvable model

We study a nonminimal massive scalar field in the background of a two-dimensional black hole spacetime. We consider the black hole which is the solution of the 2D dilaton gravity derived from string-theoretical models. We find an explicit solution in a closed form for all modes and the Green function of the scalar field with an arbitrary mass and a nonminimal coupling to the curvature. Greybody factors, the Hawking radiation, and (phi (2))(ren) are calculated explicitly for this exactly solvable model.