Symmetry restoration in the early universe

Details Symmetry restoration in the early universe Symmetry restoration in the early universe

Jul 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978jpha...11.1341g&link_type=abstract

Journal of Physics A - Mathematical and General, vol. 11, July 1978, p. 1341-1345.

Physics

10

Big Bang Cosmology, Field Theory (Physics), Symmetry, Universe, Curvature, Space Temperature, Space-Time Functions

Scientific paper

A simple model is discussed in which the vacuum expectation value of a complex scalar field is non-zero in the flat-space vacuum. Generalizing to curved space and choosing the conformal vacuum in Friedmann models it is found that in hot big bang models symmetry is restored at early times whereas in cold models two new effects arise - a classical curvature term and a zero-point fluctuation term. These have opposite effects and lead to restoration only in closed universes.

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