PIRSA:19110104

Video URL

https://pirsa.org/19110104

Towards inclusion of biology in cosmology

Cortes, M. (2019). Towards inclusion of biology in cosmology. Perimeter Institute for Theoretical Physics. https://pirsa.org/19110104

Cortes, Marina. Towards inclusion of biology in cosmology. Perimeter Institute for Theoretical Physics, Nov. 22, 2019, https://pirsa.org/19110104 

          @misc{ scivideos_PIRSA:19110104,
            doi = {10.48660/19110104},
            url = {https://pirsa.org/19110104},
            author = {Cortes, Marina},
            keywords = {Cosmology, Quantum Fields and Strings, Quantum Gravity},
            language = {en},
            title = {Towards inclusion of biology in cosmology},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2019},
            month = {nov},
            note = {PIRSA:19110104 see, \url{https://scivideos.org/pirsa/19110104}}
          }

Marina Cortes Institute for Astrophysics and Space Sciences

Talk numberPIRSA:19110104
DOI10.48660/19110104
Source RepositoryPIRSA
Collection
Talk Type Conference
Subject

Abstract

Cosmologists wish to explain how our universe, in all its complexity, could ever have come about. For that, we assess the number degrees of freedom in our Universe now. This plays the role of entropy in thermodynamics of the Universe, and reveals the magnitude of the problem of initial conditions to be solved. In our budget, we account for gravity, thermal motions, and finally the vacuum energy whose entropy, given by the Bekenstein bound, dominates the entropy budget today. There is however one number which we have not accounted for: the number of degrees of freedom in our complex biosphere. What is the entropy of life? Is it sizeable enough to need to be accounted for at the Big Bang, or negligible compared to vacuum entropy?