The third order scalar induced gravitational waves

Abstract Since the gravitational waves were detected by LIGO and Virgo, it has been promising that lots of information about primordial Universe could be learned further observations on stochastic background. The studies induced curvature perturbations are great interest. aim this paper is to investigate third order waves. Based theory cosmological perturbations, first scalar induces second scalar, vector tensor perturbations. At next iteration, all induce We present two point function ? h ?,(3) ?',(3) ? corresponding energy density spectrum for a monochromatic power spectrum. shape different from And found sourced dominate