# Modified Chaplygin Gas Cosmology from Geometrothermodynamics

## TL;DR

This paper derives a modified Chaplygin gas cosmological model using geometrothermodynamics, showing it can describe the universe's accelerated expansion and unify dark energy and dark matter consistent with observations.

## Contribution

It introduces a novel derivation of the MCG model from GTD, linking thermodynamic interaction to cosmological acceleration and unification of dark components.

## Key findings

- MCG describes accelerated universe expansion
- MCG unifies dark energy and dark matter
- Model aligns with SNe and CMB data

## Abstract

The modified Chaplygin gas (MCG) cosmological model is derived by using the geometrothermodynamics (GTD) formalism. We show that the MCG corresponds to a system with internal thermodynamic interaction and describes the current accelerated expansion of the universe. Moreover, we also show that the MCG can be interpreted as a unified model for dark energy and dark matter that is perfectly consistent with the current SNe observations and CMB anisotropy measurements.