Generalized Second Law of Thermodynamics on the Event Horizon for Interacting Dark Energy

TL;DR

This paper investigates the conditions under which the generalized second law of thermodynamics (GSLT) holds on the event horizon in an FRW universe with interacting dark matter and dark energy models, using observational data.

Contribution

It analyzes the validity of GSLT for different dark energy models in an interacting universe, considering observational constraints and the first law of thermodynamics.

Findings

GSLT holds in both quintessence and phantom eras for new age graphic dark energy.

GSLT is valid only in the phantom era for holographic dark energy.

The study uses recent observational data to support the thermodynamic analysis.

Abstract

Here we are trying to find the conditions for the validity of the generalized second law of thermodynamics (GSLT) assuming the first law of thermodynamics on the event horizon in both cases when the FRW universe is filled with interacting two fluid system- one in the form of cold dark matter and the other is either holographic dark energy or new age graphic dark energy. Using the recent observational data we have found that GSLT holds both in quintessence era as well as in phantom era for new age graphic model while for holographic dark energy GSLT is valid only in phantom era.