Radiation Instability for a Matter Bounce

          @misc{ pirsa_PIRSA:11070056,
            doi = {10.48660/11070056},
            url = {https://pirsa.org/11070056},
            author = {Karouby, Johanna},
            keywords = {},
            language = {en},
            title = {Radiation Instability for a Matter Bounce},
            publisher = {Perimeter Institute},
            year = {2011},
            month = {jul},
            note = {PIRSA:11070056 see, \url{https://pirsa.org}}
          }
          

Abstract

In this talk I will discuss an alternative to infation models, namely non singular bouncing models.Their advantage is to supress both the transplanckian problem and the big bang singularity. It also gives a scale invariant power spectrum in the case of amatter bounce.First we will study a toy model, the non singular matter bounce. Then we will try to see what is the effect when we add upradiation through a gauge fields. To do that we add up a coupling term between the scalar fields and the gauge fields to see if it destroys the bounce or not.