# Viscous Accelerating Universe with Non-linear and Logarithmic Equation of State Fluid

## TL;DR

This paper models the late-time accelerated universe using a viscous fluid with a generalized, logarithmic-corrected equation of state, providing insights into how viscosity influences cosmic acceleration.

## Contribution

It introduces a novel approach by incorporating bulk viscosity and a modified logarithmic EoS to describe the universe's accelerated expansion.

## Key findings

- Viscous effects significantly impact universe evolution.
- Implicit solutions for dark energy dynamics are derived.
- The modified EoS explains late-time acceleration effectively.

## Abstract

We describe the accelerated expansion of the late-time universe using a generalized equation of state (EoS) when account is taken of bulk viscosity. We assume a homogeneous and isotropic Friedmann-Robertson-Walker spacetime. Solutions of the gravitational equations for dark energy are obtained in implicit form. Characteristic properties of the Universe evolution in the presence of the viscosity effects are discussed. Finally, the dynamics of the accelerated expansion of the viscous universe is discussed, on the basis of a modified logarithmic-corrected EoS.