PIRSA:17080076

Uber-Gravity and H0 tension

Khosravi, N. (2017). Uber-Gravity and H0 tension. Perimeter Institute. https://pirsa.org/17080076

Khosravi, Nima. Uber-Gravity and H0 tension. Perimeter Institute, Aug. 29, 2017, https://pirsa.org/17080076 

          @misc{ pirsa_PIRSA:17080076,
            doi = {10.48660/17080076},
            url = {https://pirsa.org/17080076},
            author = {Khosravi, Nima},
            keywords = {Cosmology},
            language = {en},
            title = {Uber-Gravity and H0 tension},
            publisher = {Perimeter Institute},
            year = {2017},
            month = {aug},
            note = {PIRSA:17080076 see, \url{https://pirsa.org}}
          }

Nima Khosravi Shahid Beheshti University

DOI 10.48660/17080076
Collection
Talk Type Scientific Series
Subject

Abstract

Recently, the idea of taking ensemble average over gravity models has been introduced. Based on this idea, we study the ensemble average over (effectively) all the gravity models dubbing the name uber-gravity which is a fixed point in the model space. The uber-gravity has interesting universal properties, independent from the choice of basis: i) it mimics Einstein-Hilbert gravity for high-curvature regime, ii) it predicts stronger gravitational force for an intermediate-curvature regime, iii) surprisingly, for low-curvature regime, i.e. R