PIRSA:13110093

Video URL

https://pirsa.org/13110093

BiGravity: from Cosmological Solutions to Dual Galileons

Fasiello, M. (2013). BiGravity: from Cosmological Solutions to Dual Galileons. Perimeter Institute for Theoretical Physics. https://pirsa.org/13110093

Fasiello, Matteo. BiGravity: from Cosmological Solutions to Dual Galileons. Perimeter Institute for Theoretical Physics, Nov. 26, 2013, https://pirsa.org/13110093 

          @misc{ scivideos_PIRSA:13110093,
            doi = {10.48660/13110093},
            url = {https://pirsa.org/13110093},
            author = {Fasiello, Matteo},
            keywords = {Cosmology},
            language = {en},
            title = {BiGravity: from Cosmological Solutions to Dual Galileons},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2013},
            month = {nov},
            note = {PIRSA:13110093 see, \url{https://scivideos.org/pirsa/13110093}}
          }

Matteo Fasiello University of Portsmouth

Talk numberPIRSA:13110093
DOI10.48660/13110093
Source RepositoryPIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I will present Cosmological FRW Solutions in BiGravity Theories and discuss their stability. After deriving the stability bound, one realizes that in Bigravity (in contradistinction to the FRW massive gravity case) the tension between requirements stemming from stability and those set by observations is resolved. The stability bound can also be derived in the decoupling limit of Bigravity. In this context an intriguing duality between Galilean interactions has emerged.