The Holography Hypothesis and Pre-Big Bang Cosmology

TL;DR

This paper explores how the holography hypothesis impacts pre-big-bang string cosmological models, demonstrating that entropy-to-area ratio remains bounded, which supports holographic principles in early universe scenarios.

Contribution

It derives evolution equations from string effective action and shows the entropy-area ratio is bounded in pre-big-bang models, linking holography with string cosmology.

Findings

Entropy-to-area ratio is bounded in pre-big-bang models.

Evolution equations are derived from string effective action.

Supports holographic principles in early universe cosmology.

Abstract

The consequences of holography hypothesis are investigated for the Pre-big-bang string cosmological models. The evolution equations are obtained from the tree level string effective action. It is shown that $S/A$ is bounded by a constant in each case, $S$ being the entropy within the volume bounded by the horizon of area $A$.