What question did this study set out to answer?

This research aims to explore the role of entropy in cosmology by defining an information fluid.

May 17, 2026Open Access

Equation of State for the Information Fluid in Entropy-Based Cosmology

Key Points

This research aims to explore the role of entropy in cosmology by defining an information fluid.
Introduces a conceptual framework extending entropy beyond thermodynamics to include informational aspects.
Describes the dynamics of the information fluid using a Chaplygin gas equation of state.
Provides a unified model for explaining both dark matter and dark energy.
Demonstrates that the information fluid can have significant implications for cosmological dynamics.

Abstract

This paper investigates the application of entropy-based frameworks to cosmology by extending the concept of entropy beyond its thermodynamic definition to include informational contributions. We introduce a novel ’information fluid’, whose dynamics are described by a Chaplygin gas equation of state, providing a unified description of dark matter and dark energy.

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