Particle decay in false vacuum

Details Particle decay in false vacuum Particle decay in false vacuum

2005-11-08

arxiv.org/abs/hep-th/0511095v1

Phys.Rev.D73:025015,2006

Physics

High Energy Physics

High Energy Physics - Theory

19 pages, 2 figures

Scientific paper

10.1103/PhysRevD.73.025015

We revisit the problem of decay of a metastable vacuum induced by the presence of a particle. For the bosons of the `master field' the problem is solved in any number of dimensions in terms of the spontaneous decay rate of the false vacuum, while for a fermion we find a closed expression for the decay rate in (1+1) dimensions. It is shown that in the (1+1) dimensional case an infrared problem of one-loop correction to the decay rate of a boson is resolved due to a cancellation between soft modes of the field. We also find the boson decay rate in the `sine-Gordon staircase' model in the limits of strong and weak coupling.

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