English

Dirac stars in Anti-de Sitter Spacetime

General Relativity and Quantum Cosmology 2024-01-10 v1

Abstract

In this paper, we construct the Dirac stars model composed of two Dirac fields and Einstein gravity in four-dimensional Anti-de Sitter spacetime. We consider the Dirac stars with free field (no self-interacting). Our investigation focuses on understanding the relationship between Arnowitt-Deser-Misner (ADM) mass, Noether charge, and binding energy in relation to the cosmological constant. Furthermore, we extend the study to the Dirac stars with self-interacting potentials. For the self-interacting Dirac stars, three types of interactions are examined: only quartic, only sextic, quartic and sextic interactions that is kind of Q-ball type interactions. In these three distinct scenarios, it is essential to investigate the impact of self-interaction constants on Dirac stars. Additionally, we study the Dirac Q-balls in the AdS background.

Keywords

Cite

@article{arxiv.2401.04547,
  title  = {Dirac stars in Anti-de Sitter Spacetime},
  author = {Xiao-Yu Zhang and Li-Zhao and Yong-Qiang Wang},
  journal= {arXiv preprint arXiv:2401.04547},
  year   = {2024}
}

Comments

17pages, 27pictures

R2 v1 2026-06-28T14:12:20.594Z