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BillSaltLake
#13
Nov6-11, 08:21 PM
PF Gold
P: 184
Note that a trivial solution, in which a = constant, will also solve the equations. In this case H = 0 identically, so κ and ρ are both zero. This would be a true Minkowski flat spacetime. Curvature is not necessarily required if ρ = 0.