Bounce solutions and the transition to thermal hopping in phi^4 theory with a phi^3 term

Details Bounce solutions and the transition to thermal hopping in phi^4 theory with a phi^3 term Bounce solutions and the transition to thermal hopping in phi^4 theory with a phi^3 term

1998-09-02

arxiv.org/abs/hep-th/9809010v1

Phys.Rev. D59 (1999) 045003

Physics

High Energy Physics

High Energy Physics - Theory

Latex file with 18 figures, 29 pages

Scientific paper

10.1103/PhysRevD.59.045003

The nature of the transition from quantum tunneling at low temperatures to thermal hopping at high temperatures is investigated in a scalar field theory with cubic symmetry breaking. The bounce solution which interpolates between the zero-temperature and high-temperature solutions is obtained numerically, using a multigrid method. It is found that, for a small value of the symmetry-breaking coupling f, the transition is first-order. For higher values of f, the transition continues to be first-order, though weakly so.

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