Phase transition and monopole production in supergravity inflation

Kohei Kamada, Kazunori Nakayama, Jun'Ichi Yokoyama

研究成果: ジャーナルへの寄稿学術論文査読

7 被引用数 (Scopus)

抄録

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.

本文言語英語
論文番号043503
ジャーナルPhysical Review D - Particles, Fields, Gravitation and Cosmology
85
4
DOI
出版ステータス出版済み - 2012 2月 3

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