Time-dependent perturbations in two-dimensional String Black Holes

Abstract

We discuss time-dependent perturbations (induced by matter fields) of a black-hole background in tree-level two-dimensional string theory. We analyse the linearized case and show the possibility of having black-hole solutions with time-dependent horizons. The latter exist only in the presence of time-dependent `tachyon' matter fields, which constitute the only propagating degrees of freedom in two-dimensional string theory. For real tachyon field configurations it is not possible to obtain solutions with horizons shrinking to a point. On the other hand, such a possibility seems to be realized in the case of string black-hole models formulated on higher world-sheet genera. We connect this latter result with black hole evaporation/decay at a quantum level.}

11 pages, two figures,UA-NPPS.9/92; CERN-TH.6671/92

References in corpus (5)

• String Theory Modifies Quantum Mechanics
• On the connection between Quantum Mechanics and the geometry of two-dimensional strings
• On the Evaporation of Black Holes in String Theory
• Measuring the $W$-hair of String Black Holes
• World-Sheet Duality, Space-Time Foam, and the Quantum Fate of a Stringy Black Hole

Cited by in corpus (5)

• Instability of two-dimensional heterotic stringy black holes
• The spectrum of the 2D Black Hole, or Does the 2D black hole have tachyonic or W--hair?
• Tachyon Back Reaction on $d=2$ String Black Hole
• On the Black Hole Background of Two-Dimensional String Theory
• All Or Nothing: On the Small Fluctuations of Two-Dimensional String-Theoretic Black Holes