Evading the cosmological domain wall problem

Details Evading the cosmological domain wall problem Evading the cosmological domain wall problem

1996-08-14

arxiv.org/abs/hep-ph/9608319v2

Phys.Rev.D55:5129-5135,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

17 pages (revtex), including 9 figures (epsf); Revised to include test of numerical approximation used; No change in results o

Scientific paper

10.1103/PhysRevD.55.5129

Discrete symmetries are commonplace in field theoretical models but pose a severe problem for cosmology since they lead to the formation of domain walls during spontaneous symmetry breaking in the early universe. However if one of the vacuua is favoured over the others, either energetically, or because of initial conditions, it will eventually come to dominate the universe. Using numerical methods, we study the evolution of the domain wall network for a variety of field configurations in two and three dimensions and quantify the rate at which the walls disappear. Good agreement is found with a recent analytic estimate of the termination of the scaling regime of the wall network.

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