Problems with the new inflationary universe

Details Problems with the new inflationary universe Problems with the new inflationary universe

Sep 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983phrvl..51.1007b&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 51, Sept. 12, 1983, p. 1007-1009.

Physics

36

Big Bang Cosmology, Broken Symmetry, Theoretical Physics, Universe, Field Theory (Physics), Scalars

Scientific paper

The new-inflationary-universe scenario, which is based on symmetry breaking due to radiative corrections of the Coleman-Weinberg type, was developed to overcome problems of excessive inhomogeneity associated with the inflationary-universe scenario of Guth (1979). The present paper discusses a difficulty with the new scenario which is independent of the previously identified scalar field fluctuations. It is shown that, for Higgs fields allowed to evolve in the full 24-dimensional space of the adjoint of SU(5), all the Coleman bubbles of the asymmetric phase within the symmetric universe evolve through an additional local minimum in the SU(4) x U(1) direction. Furthermore, if a bubble should get stuck in this minimum, it will evolve towards the SU(3) x SU(2) x U(1) global minimum by a strongly first-order transition, leading to the same problems as with the Guth scenario.

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