Is there a monopole problem?

Details Is there a monopole problem? Is there a monopole problem?

1995-07-05

arxiv.org/abs/hep-ph/9507230v2

Phys.Rev.Lett. 75 (1995) 4559-4562

Physics

High Energy Physics

High Energy Physics - Phenomenology

Latex, 12 pages, revised version as appeared in Physical Review Letters. Minor corrections, comments and two references added

Scientific paper

10.1103/PhysRevLett.75.4559

We investigate the high temperature behavior of SU(5) in its minimal version. We show that there exists a range of parameters of the Higgs potential for which the symmetry remains broken at high temperature, thus avoiding the phase transition that gives rise to the overproduction of monopoles . We also show that in such scenario the thermal production of monopoles can be suppressed in a wide range of parameters, keeping their number density below the cosmological limits.

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