English

All Or Nothing: On the Small Fluctuations of Two-Dimensional String-Theoretic Black Holes

High Energy Physics - Theory 2008-02-03 v3 General Relativity and Quantum Cosmology

Abstract

A comprehensive analysis of small fluctuations about two-dimensional string-theoretic and string-inspired black holes is presented. It is shown with specific examples that two-dimensional black holes behave in a radically different way from all known black holes in four dimensions. For both the SL(2,R)/U(1)SL(2,R)/U(1) black hole and the two-dimensional black hole coupled to a massive dilaton with constant field strength, it is shown that there are a {\it continuous infinity} of solutions to the linearized equations of motion, which are such that it is impossible to ascertain the classical linear response. It is further shown that the two-dimensional black hole coupled to a massive, linear dilaton admits {\it no small fluctuations at all}. We discuss possible implications of our results for the Callan-Giddings-Harvey-Strominger black hole.

Keywords

Cite

@article{arxiv.hep-th/9210165,
  title  = {All Or Nothing: On the Small Fluctuations of Two-Dimensional String-Theoretic Black Holes},
  author = {Gerald Gilbert and Eric Raiten},
  journal= {arXiv preprint arXiv:hep-th/9210165},
  year   = {2008}
}

Comments

36 pages, (Note 1 completely replaced, Note 3 revised and extended. Also minor typo corrections.)