PIRSA:08060098

The lessons from the running of the tensor-to-scalar ratio

(2008). The lessons from the running of the tensor-to-scalar ratio . Perimeter Institute. https://pirsa.org/08060098

The lessons from the running of the tensor-to-scalar ratio . Perimeter Institute, Jun. 06, 2008, https://pirsa.org/08060098 

          @misc{ pirsa_PIRSA:08060098,
            doi = {10.48660/08060098},
            url = {https://pirsa.org/08060098},
            author = {},
            keywords = {Quantum Fields and Strings, Particle Physics, Cosmology},
            language = {en},
            title = {The lessons from the running of the tensor-to-scalar ratio },
            publisher = {Perimeter Institute},
            year = {2008},
            month = {jun},
            note = {PIRSA:08060098 see, \url{https://pirsa.org}}
          }
Talk number
PIRSA:08060098
Collection
Talk Type
Subject
Abstract
We derive a simple consistency relation from the running of the tensor-to-scalar ratio. This new relation is first order in the slow-roll approximation. While for single field models we can obtain what can be found by using other observables, multi-field cases in general give non-trivial contributions dependent on the geometry of the field space and the inflationary dynamics, which can be probed observationally from this relation.