Phase transition and monopole production in supergravity inflation

Details Phase transition and monopole production in supergravity inflation Phase transition and monopole production in supergravity inflation

2011-10-18

arxiv.org/abs/1110.3904v3

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages, 4 figures; references added, typos corrected, published version; v3, references added

Scientific paper

In F-term supergravity inflation models, scalar fields other than the inflaton generically receive a Hubble induced mass, which may restore gauge symmetries during inflation and phase transitions may occur during or after inflation as the Hubble parameter decreases. We study monopole (and domain wall) production associated with such a phase transition in chaotic inflation in supergravity and obtain a severe constraint on the symmetry breaking scale which is related with the tensor-to-scalar ratio. Depending on model parameters, it is possible that monopoles are sufficiently diluted to be free from current constraints but still observable by planned experiments.

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