3 research outputs found
Static and non-static quantum effects in two-dimensional dilaton gravity
We study backreaction effects in two-dimensional dilaton gravity. The
backreaction comes from an term which is a part of the one-loop effective
action arising from massive scalar field quantization in a certain
approximation. The peculiarity of this term is that it does not contribute to
the Hawking radiation of the classical black hole solution of the field
equations. In the static case we examine the horizon and the physical
singularity of the new black hole solutions. Studying the possibility of time
dependence we see the generation of a new singularity. The particular solution
found still has the structure of a black hole, indicating that non-thermal
effects cannot lead, at least in this approximation, to black hole evaporation.Comment: 10 pages, no figure
Static and nonstatic quantum effects in two-dimensional dilaton gravity
We study back-reaction effects in two-dimensional dilaton gravity. The
back-reaction comes from an R-2 term which is a Dart of the one-loop
effective action arising from massive scaler field quantization in a
certain approximation. The peculiarity of this term is that it does not
contribute to the Hawking radiation of the classical black hole solution
of the field equations. In the static case we examine the horizon and
the physical singularity of the new black hole solutions. Studying the
possibility of time dependence we see the generation of a new
singularity. The particular solution found still has the structure of a
black hole, indicating that nonthermal effects cannot lead, at least in
this approximation, to black hole evaporation