English

Realistic compact stars in conformal teleparallel gravity

General Relativity and Quantum Cosmology 2022-09-01 v1

Abstract

We explore an interior solution of a physically symmetric vierbein with two unknown functions in conformal teleparallel gravity. The field equations can be described in a closed system for a particular form of the metric potentials and an appropriate anisotropic function. As a result, we find a new set of configurations consistent with observed pulsars. In particular, the boundary conditions for the interior spacetime are used for the Schwarzschild spacetime to constrain the conformal field that with a unit value through the surface of a compact object. Furthermore, we apply the present model to the pulsar 4U1608524U1608-52 with approximated radius R=9.52±0.15R= 9.52 \pm 0.15 km and mass M=1.74±0.14MM= 1.74 \pm 0.14\, M_{\circledcirc}. To analyze the stability, we also study the causality conditions and the adiabatic index by assuming the Tolman-Oppenheimer-Volkov equation, adiabatic index and the static state. Moreover, the consistency of the model under consideration with other pulsars is investigated.

Keywords

Cite

@article{arxiv.2208.14982,
  title  = {Realistic compact stars in conformal teleparallel gravity},
  author = {G. G. L. Nashed and K. Bamba},
  journal= {arXiv preprint arXiv:2208.14982},
  year   = {2022}
}

Comments

19 pages, 5 figures, will appear in Progress of Theoretical & Experimental Physics

R2 v1 2026-06-28T00:30:16.727Z