English

Inflation and the late time acceleration from Hossenfelder-Verlinde gravity

General Relativity and Quantum Cosmology 2023-05-24 v3 High Energy Physics - Phenomenology

Abstract

We show that Hossenfelder's covariant formulation of Verlinde's emergent gravity predicts inflation and the late-time acceleration at the same time, without assuming a separate field such as inflaton, whose sole purpose is producing inflation. In particular, for the current deceleration parameter q=0.95q=-0.95 to 0.55-0.55, we obtained λ2\lambda^2, the mass of the imposter field, from 1.85×1041.85\times 10^4 to 2.26×1042.26\times 10^4. We also note that the value of λ\lambda around q=0.93q=-0.93 coincides with the inverse of fine structure constant.

Keywords

Cite

@article{arxiv.2304.07301,
  title  = {Inflation and the late time acceleration from Hossenfelder-Verlinde gravity},
  author = {Youngsub Yoon and Atanu Guha},
  journal= {arXiv preprint arXiv:2304.07301},
  year   = {2023}
}

Comments

Previous numerical mistakes fixed. Simulations for four different values of q. Connection with the fine structure constant suggested