Inflationary Reheating in Grand Unified Theories

Details Inflationary Reheating in Grand Unified Theories Inflationary Reheating in Grand Unified Theories

1998-04-30

arxiv.org/abs/hep-ph/9804453v4

Phys.Rev.Lett. 81 (1998) 2630-2633

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 5 ps figures - 1 colour, Revtex. Further (colour & 3-D) figures available from http://www.sissa.it/~bassett/reheating

Scientific paper

10.1103/PhysRevLett.81.2630

Grand unified theories may display multiply interacting fields with strong coupling dynamics. This poses two new problems: (1) What is the nature of chaotic reheating after inflation, and (2) How is reheating sensitive to the mass spectrum of these theories ? We answer these questions in two interesting limiting cases and demonstrate an increased efficiency of reheating which strongly enhances non-thermal topological defect formation, including monopoles and domain walls. Nevertheless, the large fluctuations may resolve this monopole problem via a modified Dvali-Liu-Vachaspati mechanism in which non-thermal destabilsation of discrete symmetries occurs at reheating.

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