Remarks on Hubble induced mass from fermion kinetic term
Remarks on Hubble induced mass from fermion kinetic term
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关于费米子动力学项的哈勃诱导质量的评论
DOI:
10.1016/j.physletb.2012.10.080
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发表时间:
2012
影响因子:
4.4
通讯作者:
Tomohiro Takesako
中科院分区:
文献类型:
--
作者:
Tomoya Hayata;Yoshimasa Hidaka;Tomohiro Takesako
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.