Validity of Generalized Second Law of Thermodynamics in the Logamediate and Intermediate scenarios of the Universe

TL;DR

This paper examines the validity of the generalized second law of thermodynamics across different cosmological horizons in logamediate and intermediate universe scenarios, considering cases with and without the first law.

Contribution

It provides a comprehensive analysis of GSL validity in various horizons and scenarios, highlighting where the law holds or breaks down.

Findings

GSL is valid for all horizons in the logamediate scenario.

GSL is valid for all horizons in the intermediate scenario using the first law.

GSL breaks down at the event horizon in the intermediate scenario.

Abstract

In this work, we have investigated the validity of the generalized second law of thermodynamics in logamediate and intermediate scenarios of the universe bounded by the Hubble, apparent, particle and event horizons using and without using first law of thermodynamics. We have observed that the GSL is valid for Hubble, apparent, particle and event horizons of the universe in the logamediate scenario of the universe using first law and without using first law. Similarly the GSL is valid for all horizons in the intermediate scenario of the universe using first law. Also in the intermediate scenario of the universe, the GSL is valid for Hubble, apparent and particle horizons but it breaks down whenever we consider the universe enveloped by the event horizon.