English

Dark Energy Star in Gravity's Rainbow

General Relativity and Quantum Cosmology 2022-10-25 v2 High Energy Astrophysical Phenomena High Energy Physics - Theory

Abstract

The concept of dark energy can be a candidate for preventing the gravitational collapse of compact objects to singularities. According to the usefulness of gravity's rainbow in UV completion of general relativity (by providing a new description of spacetime), it can be an excellent option to study the behavior of compact objects near phase transition regions. In this work, we obtain a modified Tolman-Openheimer-Volkof (TOV) equation for anisotropic dark energy as a fluid by solving the field equations in gravity's rainbow. Next, to compare the results with general relativity, we use a generalized Tolman-Matese-Whitman mass function to determine the physical quantities such as energy density, radial pressure, transverse pressure, gravity profile, and anisotropy factor of the dark energy star. We evaluate the junction condition and investigate the dynamical stability of dark energy star thin shell in gravity's rainbow. We also study the energy conditions for the interior region of this star. We show that the coefficients of gravity's rainbow can significantly affect this non-singular compact object and modify the model near the phase transition region.

Keywords

Cite

@article{arxiv.2208.07063,
  title  = {Dark Energy Star in Gravity's Rainbow},
  author = {A. Bagheri Tudeshki and G. H. Bordbar and B. Eslam Panah},
  journal= {arXiv preprint arXiv:2208.07063},
  year   = {2022}
}

Comments

13 pages, 8 figures, Physics Letters B (2022) accepted

R2 v1 2026-06-25T01:42:28.428Z