Rip Brane Cosmology from 4d Inhomogeneous Dark Fluid Universe

TL;DR

This paper explores how inhomogeneous dark fluid models within 4d FRW cosmology can naturally produce brane cosmologies, including Rip scenarios, without explicitly invoking higher-dimensional brane concepts.

Contribution

It demonstrates that 4d inhomogeneous dark fluid models can generate brane cosmologies and Rip scenarios without explicit higher-dimensional frameworks.

Findings

Inhomogeneous dark fluid models can produce brane cosmologies.

Examples of brane Rip cosmology are derived from 4d models.

The approach avoids explicit higher-dimensional assumptions.

Abstract

Specific dark energy models with linear inhomogeneous time-dependent equation of state, within the framework of 4d Friedman-Robertson-Walker (FRW) cosmology, are investigated. It is demonstrated that the choice of such 4d inhomogeneous fluid models may lead to a brane FRW cosmology without any explicit account of higher dimensions at all. Effectively, we thus obtain a brane dark energy universe without introducing the brane concept explicitly. Several examples of brane Rip cosmology arising from 4d inhomogeneous dark fluid models are given.