Quantized shells as a tool for studying semiclassical effects in general relativity
Abstract
Thin shells in general relativity can be used both as models of collapsing objects and as probes in the spacetime outside compact sources. Therefore they provide a useful tool for the analysis of the final fate of collapsing matter and of the effects induced in the matter by strong gravitational fields. We describe the radiating shell as a (second quantized) manybody system with one collective degree of freedom, the (average) radius, by means of an effective action which also entails a thermodynamic description. Then we study some of the quantum effects that occur in the matter when the shell evolves from an (essentially classical) large initial radius towards the singularity and compute the corresponding backreaction on its trajectory.
 Publication:

Nuclear Physics B Proceedings Supplements
 Pub Date:
 June 2000
 DOI:
 10.1016/S09205632(00)007830
 arXiv:
 arXiv:grqc/9911088
 Bibcode:
 2000NuPhS..88..273C
 Keywords:

 General Relativity and Quantum Cosmology;
 Astrophysics;
 High Energy Physics  Theory
 EPrint:
 4 pages, uses espcrc2.sty, no figures, talk given at the Third meeting on constrained dynamics and quantum gravity (QG99), Sardinia, Sept 1999