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- W3102783809 endingPage "036" @default.
- W3102783809 startingPage "036" @default.
- W3102783809 abstract "We investigate primordial tensor non-Gaussianity in single field inflation, during a phase of non-attractor evolution when the spectrum of primordial tensor modes can be enhanced to a level detectable at interferometer scales. Making use of a tensor duality we introduced in arXiv:1808.10475, we analytically compute the full bispectrum of primordial tensor fluctuations during the non-attractor era. During this epoch the shape of the tensor bispectrum is enhanced in the squeezed limit, its amplitude can be amplified with respect to slow-roll models, and tensor non-Gaussianity can exhibit a scale dependence distinctive of our set-up. We prove that our results do not depend on the frame used for the calculations. Squeezed tensor non-Gaussianity induces a characteristic quadrupolar anisotropy on the power spectrum of the stochastic background of primordial tensor perturbations. As a step to make contact with gravitational wave experiments, we discuss the response function of a ground based Michelson interferometer to a gravitational wave background with such a feature." @default.
- W3102783809 created "2020-11-23" @default.
- W3102783809 creator A5008560656 @default.
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- W3102783809 creator A5024926912 @default.
- W3102783809 creator A5050028139 @default.
- W3102783809 creator A5061171337 @default.
- W3102783809 date "2019-09-17" @default.
- W3102783809 modified "2023-09-27" @default.
- W3102783809 title "Squeezed tensor non-Gaussianity in non-attractor inflation" @default.
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