Phase transitions in radiation-filled Friedmann world models

Details Phase transitions in radiation-filled Friedmann world models Phase transitions in radiation-filled Friedmann world models

Dec 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..97..461m&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 97, no. 2, Dec. 1983, p. 461-463.

Astronomy and Astrophysics

Astrophysics

1

Astronomical Models, Cosmology, Phase Transformations, Universe, Einstein Equations, Mathematical Models, Unified Field Theory

Scientific paper

While it is generally accepted that a superdense hot universe in which phase transitions occur is indispensable for the achievement of the grand unification of physics, the problem may be considered from the standpoint of the constraits imposed on the ensemble of possible universes by the phase transition mechanism required by grand unification theories. This problem is presently considered in light of the radiation-filled Friedmann subclass of world models, represented in the form of a dynamical system. Standard dynamical systems methods allow the classification of all cosmological models within the subclass considered into those in which phase transitions can take place, and those in which they can never occur.

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