Traversable wormholes in Rastall-Rainbow gravity
Abstract
In this paper, we investigate the existence of asymptotically flat wormhole geometries within the framework of Rastall-Rainbow modified gravity, a synthesis of two distinct theoretical models: Rastall theory and the Rainbow description. Our study uncovers that, when considering specific combinations of free parameters and equations of state, the emergence of static and spherically symmetric wormholes is not feasible within a zero-tidal-force context. By considering the subset of viable solutions, we conduct a rigorous assessment of their stability through adiabatic sound velocity analysis and scrutinize their compliance with the Weak Energy Condition (WEC). Our inquiry provides insights into how the interplay between Rastall parameters and Rainbow functions may alleviate violations of energy conditions in these modified gravity scenarios.
- Publication:
-
Physics of the Dark Universe
- Pub Date:
- December 2023
- DOI:
- 10.1016/j.dark.2023.101364
- arXiv:
- arXiv:2309.01976
- Bibcode:
- 2023PDU....4201364T
- Keywords:
-
- Wormholes;
- Stability analysis;
- Rastall-Rainbow gravity;
- General Relativity and Quantum Cosmology
- E-Print:
- 12 pages, 6 figures, Minor typos corrected, few short comments added