PIRSA:09110140

Observing the Multifield Cyclic Universe

Lehners, J. (2009). Observing the Multifield Cyclic Universe. Perimeter Institute. https://pirsa.org/09110140

Lehners, Jean-Luc. Observing the Multifield Cyclic Universe. Perimeter Institute, Nov. 27, 2009, https://pirsa.org/09110140 

          @misc{ pirsa_PIRSA:09110140,
            doi = {10.48660/09110140},
            url = {https://pirsa.org/09110140},
            author = {Lehners, Jean-Luc},
            keywords = {Cosmology},
            language = {en},
            title = {Observing the Multifield Cyclic Universe},
            publisher = {Perimeter Institute},
            year = {2009},
            month = {nov},
            note = {PIRSA:09110140 see, \url{https://pirsa.org}}
          }

Jean-Luc Lehners Max Planck Institute for Gravitational Physics - Albert Einstein Institute (AEI) - Theoretical Cosmology

DOI 10.48660/09110140
Collection
Talk Type Scientific Series
Subject

Abstract

I will discuss the qualitative differences between the single-field and multifield cyclic universes, in particular the resulting global "phoenix" structure and its relation to dark energy. The multifield cyclic universe arises naturally from embedding the cyclic universe in supergravity and leads to distinct observational predictions regarding non-gaussian signatures in the CMB. I will present a simplified derivation of these predictions.