Stochastic gravitational waves from spin-3/2 fields -- Hunting SUSY in the sky
arXiv:1811.11774 · doi:10.1103/PhysRevD.99.095032
Abstract
Stochastic gravitational waves can be produced during the preheating when out-of-equilibrium particles are produced with an anisotropic stress-tensor. We discuss the case where these particles carry spin 3/2. We compute the spectrum of the gravitational waves generated by the transverse and longitudinal components. We find a different scaling of the spectrum near the peak and the longitudinal components lead to an enhancement when compared to spin-1/2 fermions with Yukawa couplings. We note, as expected, that the corresponding typical frequency is too high for the current observation and calls for ultra-high frequency gravitational wave detectors in the future.
13 pages, 1 figure. v3: one equation corrected
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Cited by in corpus (5)
- Challenges and Opportunities of Gravitational Wave Searches at MHz to GHz Frequencies
- Cosmology with the Laser Interferometer Space Antenna
- The case for decaying spin-3/2 dark matter
- Challenges and Opportunities of Gravitational Wave Searches above 10 kHz
- High frequency gravitational waves from spin-3/2 fields