Kinetic equation for tachyons

Details Kinetic equation for tachyons Kinetic equation for tachyons

2002-11-06

arxiv.org/abs/hep-th/0211045v1

Phys.Lett. B558 (2003) 103-110

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, revtex file, no figures

Scientific paper

10.1016/S0370-2693(03)00215-6

The tachyonic regime of the quantum fluctuations of a self-interacting scalar field around its vacuum mean value is studied within a kinetic approach. We derive a quantum kinetic equation which determines the time evolution of the momentum distribution function of produced tachyonic modes and includes memory effects. The back-reaction of the quantum fluctuations on the vaccum mean field is taken into account, while their interaction is neglected. We show that the tachyonic modes do not correspond to real particles and contribute to the decay of the metastable vacuum state.

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