Video URL

https://pirsa.org/14070030

Cosmological Coincidence Problem

(2014). Cosmological Coincidence Problem. Perimeter Institute for Theoretical Physics. https://pirsa.org/14070030

Cosmological Coincidence Problem. Perimeter Institute for Theoretical Physics, Jul. 15, 2014, https://pirsa.org/14070030 

          @misc{ scivideos_PIRSA:14070030,
            doi = {10.48660/14070030},
            url = {https://pirsa.org/14070030},
            author = {},
            keywords = {Cosmology},
            language = {en},
            title = {Cosmological Coincidence Problem},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2014},
            month = {jul},
            note = {PIRSA:14070030 see, \url{https://scivideos.org/pirsa/14070030}}
          }
DOI 10.48660/14070030
Source Repository PIRSA
Collection
Talk Type Scientific Series
Subject

Abstract

I will try to explain how cosmological coincidence of the two values, the matter energy density and the dark energy density, at the present epoch based on a single scalar field model whith a quartic potential, non-mimimally interacting with gravity. Dark energy in this model originates from the potential energy of the scalar field, which is sourced by the appearance of non-relativistic matter at the time z~ 10^10. No fine tuning of parameter are neccessary.