Power spectra and circular polarization of primordial gravitational waves with parity and Lorentz violations
Tian-Chen Li,
Tao Zhu,
Wen Zhao
et al.
Abstract:The violations of parity and Lorentz symmetries in gravity can change the propagating properties of gravitational waves (GWs) in the cosmological background, which can arise from a large number of parity- and Lorentz-violating theories. In this paper, through a systematic parametrization for characterizing possible derivations from the standard GW propagation in general relativity, we study both the parity- and Lorentz-violating effects on the power spectra and the polarization of the primordial gravitational … Show more
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