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|Title:||Dynamics of the universe and spontaneous symmetry breaking|
|Affiliation:||AA(NASA, Goddard Space Flight Center, Laboratory for High Energy Astrophysics, Greenbelt, Md.)|
|Publication:||Astrophysical Journal, Part 2 - Letters to the Editor, vol. 241, Oct. 15, 1980, p. L59-L63. (ApJL Homepage)|
|NASA/STI Keywords:||Cosmology, Symmetry, Universe, Dynamic Models, Expansion, Gravitation|
It is shown that the presence of a phase transition early in the history
of the universe, associated with spontaneous symmetry breaking (believed
to take place at very high temperatures at which the various fundamental
interactions unify), significantly modifies its dynamics and evolution.
This is due to the energy 'pumping' during the phase transition from the
vacuum to the substance, rather than the gravitating effects of the
vacuum. The expansion law of the universe then differs substantially
from the relation considered so far for the very early time expansion.
In particular it is shown that under certain conditions this expansion
law is exponential. It is further argued that under reasonable
assumptions for the mass of the associated Higgs boson this expansion
stage could last long enough to potentially account for the observed
isotropy of the universe.
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