Phase transitions and dynamics of the universe

Details Phase transitions and dynamics of the universe Phase transitions and dynamics of the universe

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982natur.298..805p&link_type=abstract

Nature, vol. 298, Aug. 26, 1982, p. 805-808.

Astronomy and Astrophysics

Astronomy

6

Astronomical Models, Broken Symmetry, Cosmology, Universe, Big Bang Cosmology, Dynamic Response, Expansion, Flux Density, Phase Transformations

Scientific paper

The restoration of symmetry at grand unification in a closed contracting Robertson-Walker universe could slow down and halt the contraction, causing the universe to bounce and avoid the singular state or the big crunch. During subsequent expansion the symmetry is broken and the universe reverts back to its present state. A scenario is presented whereby the present entropy of the substance is created through a series of such bounces along with three possible initial states. The monopole, horizon, and flatness difficulties faced in ordinary Big Bang models are also solved by the model presented.

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