Spontaneous symmetry breaking in cosmological spacetimes

Details Spontaneous symmetry breaking in cosmological spacetimes Spontaneous symmetry breaking in cosmological spacetimes

Nov 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phlb..131...40k&link_type=abstract

Physics Letters B, Volume 131, Issue 1-3, p. 40-44.

Physics

2

Scientific paper

A spontaneous symmetry breaking mechanism is investigated in a conformally coupled massless, γσ4 model in a spatially flat Robertson-Walker univrse by relaxing the requirement of conformal time translation invariance on the ground state and the one-loop effective action is conputed for the appropriate time-dependent background field. The infrared behavior of the model requires a modification of the propagator. A finite renormalized trace anomaly is isolated which yields a dynamical equation for the expansion scale factor.

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