Late time Acceleration and Role of Skewness in Anisotropic models

TL;DR

This paper investigates how anisotropic expansion and skewness in directional Hubble rates influence late-time cosmic acceleration, highlighting the importance of skewness in shaping the universe's effective equation of state.

Contribution

It introduces the role of skewness in anisotropic cosmological models and demonstrates its impact on the evolution of the universe's effective equation of state.

Findings

Skewness significantly affects the behavior of anisotropic models.

Inclusion of skewness leads to a more evolving effective equation of state.

Anisotropic models with skewness can explain late-time acceleration.

Abstract

We study cosmological models with anisotropy in expansion rates in the context of the recent observations predicting an accelerating universe. In the absence of any anisotropy in the cosmic fluid, it is shown that the role of skewness in directional Hubble rates is crucial in deciding the behavior of the model. We find that incorporation of skewness leads to a more evolving effective equation of state parameter.