PIRSA:11100001

Nonstandard Tensor Modes from Inflation

Sorbo, L. (2011). Nonstandard Tensor Modes from Inflation . Perimeter Institute. https://pirsa.org/11100001

Sorbo, Lorenzo. Nonstandard Tensor Modes from Inflation . Perimeter Institute, Oct. 25, 2011, https://pirsa.org/11100001 

          @misc{ pirsa_PIRSA:11100001,
            doi = {10.48660/11100001},
            url = {https://pirsa.org/11100001},
            author = {Sorbo, Lorenzo},
            keywords = {Cosmology},
            language = {en},
            title = {Nonstandard Tensor Modes from Inflation },
            publisher = {Perimeter Institute},
            year = {2011},
            month = {oct},
            note = {PIRSA:11100001 see, \url{https://pirsa.org}}
          }

Lorenzo Sorbo University of Massachusetts Amherst

DOI 10.48660/11100001
Collection
Talk Type Scientific Series
Subject

Abstract

Several mechanisms can lead to production of particles during inflation. I discuss how this phenomenon can induce a contribution to the primordial spectrum of gravitational waves with unusual properties: the tensors produced this way can violate parity; can have a large three-point function; can have a relatively large tensor-to-scalar ratio even if inflation occurs at low energies; finally, their spectrum can display a feature that can be directly detected by second-generation gravitational interferometers such as advanced LIGO.