Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Semiclassical stability of supergravity vacua

Semiclassical stability of supergravity vacua We discuss the existence of instantonic decay modes which would indicate a semiclassical instability of the vacua of 10- and 11-dimensional supergravity theories. Decay modes whose spin structures are incompatible with those of supersymmetric vacua have previously been constructed, and we present generalizations including those involving nontrivial dilaton and antisymmetric tensor fields. We then show that the requirement that any instanton describing supersymmetric vacuum decay should admit both a zero momentum hypersurface from which we describe the subsequent Lorentzian evolution and a spin structure at infinity compatible with the putative vacuum excludes all such decay modes, except those with unphysical energy-momentum tensors which violate the dominant energy condition. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review D American Physical Society (APS)

Semiclassical stability of supergravity vacua

Physical Review D , Volume 55 (8) – Apr 15, 1997
17 pages

Loading next page...
 
/lp/american-physical-society-aps/semiclassical-stability-of-supergravity-vacua-O6db04Nb0j

References (20)

Publisher
American Physical Society (APS)
Copyright
Copyright © 1997 The American Physical Society
ISSN
1089-4918
DOI
10.1103/PhysRevD.55.4822
Publisher site
See Article on Publisher Site

Abstract

We discuss the existence of instantonic decay modes which would indicate a semiclassical instability of the vacua of 10- and 11-dimensional supergravity theories. Decay modes whose spin structures are incompatible with those of supersymmetric vacua have previously been constructed, and we present generalizations including those involving nontrivial dilaton and antisymmetric tensor fields. We then show that the requirement that any instanton describing supersymmetric vacuum decay should admit both a zero momentum hypersurface from which we describe the subsequent Lorentzian evolution and a spin structure at infinity compatible with the putative vacuum excludes all such decay modes, except those with unphysical energy-momentum tensors which violate the dominant energy condition.

Journal

Physical Review DAmerican Physical Society (APS)

Published: Apr 15, 1997

There are no references for this article.