Relativity and Cosmology


Metric Conventions and the FLRW Metric

Authors: Anamitra Palit

We investigate the flat space time Friedmann Lemaitre Robertson Walker model of cosmology in the light of two metric signatures:(-,+,+,+) and (+,-,-,-). We arrive at the interesting fact that with the (+,-,-,-)signature both the Ricci scalar and the energy component of the stress energy tensor are negative for all points of cosmological time. With this component we do have a positive pressure favoring the expansion of the universe.

Comments: 7 Pages.

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Submission history

[v1] 2019-12-11 19:18:17
[v2] 2019-12-16 23:16:55

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