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
期刊:
影响因子:
4.4
通讯作者:
Tomohiro Takesako
Tomohiro Takesako
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Tomoya Hayata;Yoshimasa Hidaka;Tomohiro Takesako

文献摘要

相似文献

在超引力框架下,我们计算了标量场通过普朗克抑制耦合与可见扇区相互作用时的有效质量。我们专注于辐射占主导地位(RD)的时代后,通货膨胀和费米场的热浴的贡献。我们发现,在RD时代,费米子动力学项给予标量场哈勃尺度量级的有效质量。
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.