Gauge hierarchies and unusual symmetry behaviour at high temperatures

Details Gauge hierarchies and unusual symmetry behaviour at high temperatures Gauge hierarchies and unusual symmetry behaviour at high temperatures

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981phlb..105..159k&link_type=abstract

Physics Letters B, Volume 105, Issue 2-3, p. 159-162.

Physics

3

Scientific paper

The high-temperature symmetry behaviour in grand unified theories with gauge hierarchies is investigated. It is shown that in a certain range of coupling constants the electroweak symmetry is broken superstrongly at temperatures T~1015 GeV. The cosmological consequences of this phenomenon are discussed. Massive fermions arising due to SU(2)L breaking at very early stages of the expansion of the universe result in production of an acceptable baryon excess, even in the framework of the minimal SU(5) model with three fermion generations.

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