Lorentz violation with an invariant minimum speed as foundation of the Gravitational Bose Einstein Condensate of a Dark Energy Star

Abstract

We aim to search for the connection between the spacetime with an invariant minimum speed so-called Symmetrical Special Relativity (SSR) with Lorentz violation and the Gravitational Bose Einstein Condensate (GBEC) as the central core of a star of gravitational vacuum (gravastar), where one normally introduces a cosmological constant for representing an anti-gravity. This usual model of gravastar with an equation of state (EOS) for vacuum energy inside the core will be generalized for many modes of vacuum (dark energy star) in order to circumvent the embarrassment generated by the horizon singularity as the final stage of a gravitational collapse. In the place of the problem of a singularity of an event horizon, we introduce a phase transition between gravity and anti-gravity before reaching the Schwarzschild (divergent) radius $R_S$ for a given coexistence radius $R_{coexistence}$ slightly larger than $R_S$ and slightly smaller than the core radius $R_{core}$ of GBEC, where the metric of the repulsive sector (core of GBEC) would diverge for $r=R_{core}$, so that for such a given radius of phase coexistence $R_S<R_{coexistence}<R_{core}$, both divergences at $R_S$ of Schwarzschild metric and at $R_{core}$ of the repulsive core are eliminated, thus preventing the formation of the event horizon. So the causal structure of SSR helps us to elucidate such puzzle of singularity of event horizon by also providing a quantum interpretation for GBEC and thus by explaining the origin of a strong anisotropy due to the minimum speed that leads to the phase transition gravity/anti-gravity during the collapse of the star. Furthermore, due to the absence of an event horizon of black hole (BH) where any signal cannot propagate, the new collapsed structure presents a signal propagation in its region of coexistence of phases where the coexistence metric does not diverge.

18 pages. 6 figures

References in corpus (7)

• Shapiro delay measurement of a two solar mass neutron star
• How to tell a gravastar from a black hole
• Gravastar energy conditions revisited
• Doubly Special Relativity with a minimum speed and the search for a quantum gravity at low energies
• Horizon closeness bounds for static black hole mimickers
• Lorentz violation with a universal minimum speed as foundation of de Sitter relativity
• Lorentz violation with an invariant minimum speed as foundation of the uncertainty principle in Minkowski, dS and AdS spaces

Cited by in corpus (4)

• Bose-Einstein Condensate dark matter models in the presence of baryonic matter and random confining potentials
• Deformed Special Relativity with an invariant minimum speed as an explanation of the cosmological constant
• Graviton mass due to dark energy as a superconducting medium: theoretical and phenomenological aspects
• GUP, Lorentz Invariance (Non)-Violation, and Non-Commutative Geometry