Odd Tensor Modes from Inflation

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Odd Tensor Modes from Inflation

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Sorbo, Lorenzo

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2015

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Abstract

The existence of a primordial spectrum of gravitational waves is a generic prediction of inflation. Here I will discuss how the coupling of a pseudoscalar inflaton to a gauge field can induce, in a two-step process, gravitational waves with unusual properties such as: (i) a net chirality (ii) a blue spectrum (iii) being detectable in the (relatively) near future by ground-based gravitational interferometers (iv) large nongaussianities even if the scalar perturbations are approximately gaussian

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CMB

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Cosmology with the CMB and its Polarization 2015

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Sorbo, Lorenzo. (2015). Odd Tensor Modes from Inflation. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/169573.

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