PIRSA:10050009

Bouncing alternatives to inflation

Peter, P. (2010). Bouncing alternatives to inflation. Perimeter Institute. https://pirsa.org/10050009

Peter, Patrick. Bouncing alternatives to inflation. Perimeter Institute, May. 11, 2010, https://pirsa.org/10050009 

          @misc{ pirsa_PIRSA:10050009,
            doi = {10.48660/10050009},
            url = {https://pirsa.org/10050009},
            author = {Peter, Patrick},
            keywords = {Cosmology},
            language = {en},
            title = {Bouncing alternatives to inflation},
            publisher = {Perimeter Institute},
            year = {2010},
            month = {may},
            note = {PIRSA:10050009 see, \url{https://pirsa.org}}
          }

Patrick Peter Institut d'Astrophysique de Paris

DOI 10.48660/10050009
Collection
Talk Type Scientific Series
Subject

Abstract

Although inflation is, by far, the best known mechanism to explain the observed properties of our Universe, there is still some room for alternative models, most of which implying a contracting phase preceding the current expanding one. Both phases are connected by a bounce at which the expansion rate must vanish. General relativity can only produce such a phase provided the spatial curvature is positive, in contradiction with the current observations. I will discuss the lines along which one can modify either the matter or the gravity sector (or both) in order to implement a bounce, and show the generic observable cosmological consequences it can induce, in particular in the microwave background.