Sequestering mechanism in scalar-tensor gravity

Takuma Tsukamoto, Taishi Katsuragawa, and Shin’ichi Nojiri
Phys. Rev. D 96, 124003 – Published 1 December 2017

Abstract

We make a theoretical prediction for the ratio of the dark energy to other components in the Universe based on the scenario of the sequestering mechanism [1–3] which was recently proposed as one possible way to solve the cosmological constant problem. In order to evaluate the value of dark energy and the others, we assume a specific scale factor which describes the big-crunch scenario in the scalar-tensor theory. We specify the parameter region where the one can explain the observed dark energy-matter ratio.

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  • Received 16 October 2017

DOI:https://doi.org/10.1103/PhysRevD.96.124003

© 2017 American Physical Society

Physics Subject Headings (PhySH)

General PhysicsGravitation, Cosmology & Astrophysics

Authors & Affiliations

Takuma Tsukamoto1,*, Taishi Katsuragawa2,3,†, and Shin’ichi Nojiri1,2,4,‡

  • 1Department of Physics, Nagoya University, Nagoya 464-8602, Japan
  • 2Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602, Japan
  • 3Institute of Astrophysics, Central China Normal University, Wuhan 430079, China
  • 4KEK Theory Center, High Energy Accelerator Research Organization (KEK), Oho 1-1, Tsukuba, Ibaraki 305-0801, Japan

  • *tsukamoto.takuma@h.mbox.nagoya-u.ac.jp
  • taishi@th.phys.nagoya-u.ac.jp
  • nojiri@phys.nagoya-u.ac.jp

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Issue

Vol. 96, Iss. 12 — 15 December 2017

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