Gravitational waves from fermion production during axion inflation
Gravitational waves from fermion production during axion inflation
复制标题
轴子膨胀期间费米子产生的引力波
DOI:
10.1088/1475-7516/2019/10/018
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发表时间:
2019
影响因子:
6.4
通讯作者:
Sorbo, Lorenzo
中科院分区:
文献类型:
--
作者:
Adshead, Peter;Pearce, Lauren;Peloso, Marco;Roberts, Michael A.;Sorbo, Lorenzo
We present analytic results for the gravitational wave power spectrum induced in models where the inflaton is coupled to a fermionic pseudocurrent. We show that although such a coupling creates helically polarized fermions, the polarized component of the resulting gravitational waves is parametrically suppressed with respect to the non-polarized one. We also show that the amplitude of the gravitational wave signal associated to this production cannot exceed that generated by the standard mechanism of amplification of vacuum fluctuations.
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DOI:
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