A symmetry of the spatially flat Friedmann equations with barotropic fluid
Valerio Faraoni (Bishop's University)
TL;DR
This paper explores a duality symmetry in the spatially flat Friedmann equations with barotropic fluid, enabling a transformation between different solutions and barotropic indices, inspired by string theory concepts.
Contribution
It introduces a generalized duality symmetry in Friedmann equations that links solutions with varying barotropic indices, expanding the understanding of cosmological models.
Findings
Identifies a string-inspired duality symmetry in Friedmann equations.
Provides a mapping between solutions with different barotropic indices.
Enhances the theoretical framework of cosmological solution transformations.
Abstract
A string-inspired duality symmetry of the spatially flat Friedmann equations of general-relativistic cosmology is discussed and generalized, providing a map between exact solutions corresponding to different values of the barotropic index.
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