Black Holes in Bulk Viscous Cosmology

TL;DR

This paper studies how bulk viscous phantom energy accretion affects black hole mass loss, revealing that viscosity accelerates black hole evaporation compared to non-viscous scenarios.

Contribution

It introduces the impact of bulk viscosity in phantom energy accretion onto black holes, a novel aspect not extensively explored before.

Findings

Viscous phantom energy causes faster black hole mass loss.

Bulk viscosity enhances the rate of black hole evaporation.

Matter presence does not prevent black hole mass decrease.

Abstract

We investigate the effects of the accretion of phantom energy with non-zero bulk viscosity onto a Schwarzschild black hole and show that black holes accreting viscous phantom energy will lose mass rapidly compared to the non-viscous case. When matter is incorporated along with the phantom energy, the black holes meet with the same fate as bulk viscous forces dominate matter accretion. If the phantom energy has large bulk viscosity, then the mass of the black hole will reduce faster than in the small viscosity case.