Monday, June 17, 2019

general relativity - Friedmann Equations with varying G?


If Newton's constant G actually varies with cosmological time t would a suitably modified form of the Einstein field equations:


Gμν+Λgμν=8πG(t)c4Tμν,


together with the standard cosmological assumptions, lead to equations that look like the standard Friedmann equations but with the varying function G(t) in place of the constant G?




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