PIRSA:10040109

Galilean Genesis: an alternative to inflation

Creminelli, P. (2010). Galilean Genesis: an alternative to inflation. Perimeter Institute. https://pirsa.org/10040109

Creminelli, Paolo. Galilean Genesis: an alternative to inflation. Perimeter Institute, Apr. 29, 2010, https://pirsa.org/10040109 

          @misc{ pirsa_PIRSA:10040109,
            doi = {10.48660/10040109},
            url = {https://pirsa.org/10040109},
            author = {Creminelli, Paolo},
            keywords = {Cosmology},
            language = {en},
            title = {Galilean Genesis: an alternative to inflation},
            publisher = {Perimeter Institute},
            year = {2010},
            month = {apr},
            note = {PIRSA:10040109 see, \url{https://pirsa.org}}
          }

Paolo Creminelli The Abdus Salam International Centre for Theoretical Physics (ICTP)

DOI 10.48660/10040109
Collection
Talk Type Conference
Subject

Abstract

I will discuss an alternative to inflation based on a Galileon field. The model starts in a (contracting or expanding) quasi Minkowski phase and all the energy of the Universe in generated suddenly in a sort of Genesis associated with a strong violation of the Null Energy Condition. The symmetries of the model force any additional scalar field to acquire a scale invariant spectrum of perturbations.