Time-Evolution of a Collective Meson Field by the Use of a Squeezed State

Details Time-Evolution of a Collective Meson Field by the Use of a Squeezed State Time-Evolution of a Collective Meson Field by the Use of a Squeezed State

2001-03-23

arxiv.org/abs/hep-ph/0103246v1

Prog.Theor.Phys. 106 (2001) 807-822

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 22 postscript figures, uses PTPTeX.sty

Scientific paper

10.1143/PTP.106.807

A time-evolution of quantum meson fields is investigated in a linear sigma model by means of the time-dependent variational approach with a squeezed state. The chiral condensate, which is a mean field of the quantum meson fields, and quantum fluctuations around it are treated self-consistently in this approach. The attention is payed to the description of the relaxation process of the chiral condensate, where the energy stored in the mean field configuration flows to the fluctuation modes. It is shown that the quantum fluctuations play an important role to describe this relaxation process.

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