English

Black-bounce solutions in a k-essence theory under the effects of bumblebee gravity

General Relativity and Quantum Cosmology 2025-06-06 v2

Abstract

In the present study, we analyze the effects of violation of Lorentz symmetry for black-bounce solutions in a kk-essence theory that has the form of a power law for the configuration n=1/3n=1/3. We perform such analysis for a known model explored in previous work Σ2=x2+a2\Sigma^2=x^2+a^2 and complement the proposal with a new black-bounce model for the area functions Σ12=x4+d4\Sigma^2_1=\sqrt{x^4+d^4}. This model has the Schwarzschild-de Sitter asymptomatic behavior for xx\to{-\infty}, and we investigate the scalar field, potential, and energy conditions for both models. We have shown that the violation of Lorentz symmetry can be generated through kk-essence without the need for an additional field. These results corroborate the validation of other previously investigated wormhole solutions.

Keywords

Cite

@article{arxiv.2503.09920,
  title  = {Black-bounce solutions in a k-essence theory under the effects of bumblebee gravity},
  author = {Carlos F. S. Pereira and Marcos V. de S. Silva and H. Belich and Denis C. Rodrigues and Júlio C. Fabris and Manuel E. Rodrigues},
  journal= {arXiv preprint arXiv:2503.09920},
  year   = {2025}
}

Comments

15 pages, 7 figures. Comments are welcome. V2: Minor modifications to match published version