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Simple Bianchi cosmologies with anisotropic Segre [1(11,1)] dark energy by Beltracchi, Philip is a scholarly article available to read on EtoBox.

What is Simple Bianchi cosmologies with anisotropic Segre [1(11,1)] dark energy about?

In this paper, we use a sample anisotropic but spatially homogeneous metric to look at the properties of Segre type [1(11,1)] universes, that behave like vacuum energy along a spatial plane (two stresses equal to the negative density) but have distinct stress along the third spatial axis. We examine situations with simple relationships between the distinct and degenerate stresses, finding a closed form parameterizations for the case where the distinct stress is equal to zero and finding new conditions in which the case with all stresses equal has a closed form parameterization. We also use numerical methods to illustrate possible behaviors for the case where the distinct stress is the negative of the degenerate stresses.

Author

Beltracchi, Philip

Published

2024

Language

EN