Brane Cosmology With Generalized Chaplygin Gas in The Bulk
Kh. Saaidi, A. Mohammadi
TL;DR
This paper derives exact solutions in brane cosmology with a generalized Chaplygin gas in the bulk, revealing a universe that transitions from deceleration to acceleration and linking bulk properties to brane dynamics.
Contribution
It presents a novel exact solution for brane cosmology incorporating a generalized Chaplygin gas in the bulk, connecting bulk equations of state to brane evolution.
Findings
Decelerating universe in early and late times
Bulk exhibits constant energy density and pressure at late times
Bulk equation of state approaches that of a cosmological constant
Abstract
We find exact solution of the Einstein equations in the context of the brane world scenario. We have supposed a {generalized chaplygin gas} equation of state for bulk. This study display a constant energy density and pressure for bulk in late time. It is shown that our assumptions impose a specific equation of state on brane. {In this work, we have obtained a decelerate universe in early time and late time.} In the end, it is shown that under some assumption we have equation of state of cosmological constant for bulk.
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