A Symmetry of the Einstein–Friedmann Equations for Spatially Flat, Perfect Fluid, Universes

A Symmetry of the Einstein–Friedmann Equations for Spatially Flat, Perfect Fluid, Universes

We report a symmetry property of the Einstein−Friedmann equations for spatially flat Friedmann−Lemaître−Robertson−Walker universes filled with a perfect fluid with any constant equation of state. The symmetry transformations form a one-parameter Abeli...

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Bibliographic Details
Main Author:	Valerio Faraoni
Format:	Article
Language:	English
Published:	MDPI AG 2020-01-01
Series:	Symmetry
Subjects:	einstein–friedmann equations cosmology classical general relativity
Online Access:	https://www.mdpi.com/2073-8994/12/1/147

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