PIRSA:19060040

Minimalism in modified gravity

Mukohyama, S. (2019). Minimalism in modified gravity. Perimeter Institute. https://pirsa.org/19060040

Mukohyama, Shinji. Minimalism in modified gravity. Perimeter Institute, Jun. 25, 2019, https://pirsa.org/19060040 

          @misc{ pirsa_PIRSA:19060040,
            doi = {10.48660/19060040},
            url = {https://pirsa.org/19060040},
            author = {Mukohyama, Shinji},
            keywords = {Cosmology},
            language = {en},
            title = {Minimalism in modified gravity},
            publisher = {Perimeter Institute},
            year = {2019},
            month = {jun},
            note = {PIRSA:19060040 see, \url{https://pirsa.org}}
          }

Shinji Mukohyama Yukawa Institute for Theoretical Physics

DOI 10.48660/19060040
Collection
Talk Type Scientific Series
Subject

Abstract

It is generally believed that modification of general relativity inevitably introduce extra physical degree(s) of freedom.
In this talk I argue that this is not the case by constructing modified gravity theories with two local physical degrees of freedom. After classifying such theories into two types, I show explicit examples and discuss their cosmology and phenomenology.