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Fate of the false monopoles: Induced vacuum decay

DSpace at IIT Bombay

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Title Fate of the false monopoles: Induced vacuum decay
 
Creator KUMAR, B
PARANJAPE, MB
YAJNIK, UA
 
Subject supersymmetry breaking
phase-transition
early universe
field-theory
dissociation
 
Description We study a gauge theory model where there is an intermediate symmetry breaking to a metastable vacuum that breaks a simple gauge group to a U(1) factor. Such a model admits the existence of metastable magnetic monopoles, which we dub false monopoles. We prove the existence of these monopoles in the thin- wall approximation. We determine the instantons for the collective coordinate that corresponds to the radius of the monopole wall and we calculate the semiclassical tunneling rate for the decay of these monopoles. The monopole decay consequently triggers the decay of the false vacuum. As the monopole mass is increased, we find an enhanced rate of decay of the false vacuum relative to the celebrated homogeneous tunneling rate due to S. R. Coleman [Subnuclear series 13, 297 (1977).].
 
Publisher AMER PHYSICAL SOC
 
Date 2011-07-16T20:56:56Z
2011-12-26T12:49:57Z
2011-12-27T05:35:48Z
2011-07-16T20:56:56Z
2011-12-26T12:49:57Z
2011-12-27T05:35:48Z
2010
 
Type Article
 
Identifier PHYSICAL REVIEW D, 82(2), -
1550-7998
http://dx.doi.org/10.1103/PhysRevD.82.025022
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4528
http://hdl.handle.net/10054/4528
 
Language en