Remarks on Hubble Induced Mass from Fermion Kinetic Term
arXiv:1208.1323 · doi:10.1016/j.physletb.2012.10.080
Abstract
We evaluate the effective mass of a scalar field which interacts with visible sector via Planck-suppressed coupling in supergravity framework. We focus on the radiation-dominated (RD) era after inflation and the contribution from a fermionic field in the thermal bath. We find that, in RD era, the fermion kinetic term gives the effective mass of the order of Hubble scale to the scalar field.
8 pages, v2: minor corrections made, published in PLB
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