Screened and unscreened solutions for relativistic star in de Rham-Gabadadze-Tolley massive gravity

Masashi Yamazaki, Taishi Katsuragawa, Sergei D. Odintsov, and Shin’ichi Nojiri
Phys. Rev. D 100, 084060 – Published 25 October 2019

Abstract

We study the static and spherical symmetric configurations in the nonminimal model of the de Rham-Gabadadze-Tolley (dRGT) massive gravity with a flat reference metric. Considering the modified Tolman-Oppenheimer-Volkof equation, the Bianchi identity, and energy-momentum conservation, we find a new algebraic equation for the radial coordinate of the reference metric. We demonstrate that this equation suggests an absence of the Vainshtein mechanism in the minimal model of the dRGT massive gravity, while it has two branches of solutions where one connects with the Schwarzschild spacetime and another implies the significant deviation from the asymptotically flat spacetime in the nonminimal model. We also briefly discuss the boundary conditions for the relativistic stars in the dRGT massive gravity and a potential relation with the mass-radius relation of the stars.

  • Received 12 February 2019

DOI:https://doi.org/10.1103/PhysRevD.100.084060

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & Astrophysics

Authors & Affiliations

Masashi Yamazaki1,*, Taishi Katsuragawa2,†, Sergei D. Odintsov3,4,6,‡, and Shin’ichi Nojiri1,5,§

  • 1Department of Physics, Nagoya University, Nagoya 464-8602, Japan
  • 2Institute of Astrophysics, Central China Normal University, Wuhan 430079, China
  • 3ICREA, Passeig Luis Companys, 23, 08010 Barcelona, Spain
  • 4Institute of Space Sciences (IEEC-CSIC), C. Can Magrans s/n, 08193 Barcelona, Spain
  • 5Kobayashi-Maskawa Institute for the Origin of Particles and the Universe, Nagoya University, Nagoya 464-8602, Japan
  • 6International Laboratory for Theoretical Cosmology, Tomsk State University of Control Systems and Radioelectronics (TUSUR), 634050 Tomsk, Russia

  • *yamazaki.masashi@c.mbox.nagoya-u.ac.jp
  • taishi@mail.ccnu.edu.cn
  • odintsov@ieec.uab.es
  • §nojiri@gravity.phys.nagoya-u.ac.jp

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Issue

Vol. 100, Iss. 8 — 15 October 2019

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