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- Geodesic equations of the FRW metric (Christoffel symbols)
Geodesic equations of the FRW metric (Christoffel symbols) Ask Question Asked 5 years, 11 months ago Modified 5 years, 11 months ago
- general relativity - Is the FRW metric physically distinguishable from . . .
Is the FRW metric physically distinguishable from a metric with a speed of light that changes over time? Ask Question Asked 5 years, 5 months ago Modified 5 years, 5 months ago
- general relativity - Ricci scalar curvature in FLRW flat universe . . .
I have a simple question about the relation between the Ricci scalar curvature and the $k$ constant in the Friedmann–Lemaître–Robertson–Walker solution
- cosmology - What is the general form of the Friedmann-Robertson-Walker . . .
3 Equation (1) given above the FRW metric assuming that the spatial manifold (i e t t =constant hypersurface) is flat meaning that the curvature of the spatial manifold is 0 While equation (2) is the correct FRW metric
- general relativity - Scalar field equation of motion in FRW metric . . .
Scalar field equation of motion in FRW metric Ask Question Asked 3 years, 5 months ago Modified 1 year, 11 months ago
- Klein-Gordon equation in FRW spacetime - Physics Stack Exchange
Klein-Gordon equation in FRW spacetime Ask Question Asked 2 years, 9 months ago Modified 6 months ago
- Why isnt the curvature scale in Robertson-Walker metric dynamic?
This is the FRW metric, here k=0 for flat space, k=1 for spherical space, k=-1 for hyperbolic space $R_0$ is the curvature scale for the corresponding maximmaly symmetric 3-dimensional space
- How are FRW metric and Minkowski metric physically different?
No, GR doesn't say matrices are coordinate invariant Tensors are invariants, and 2nd rank tensors are frequently written as matrices, but the representation, i e the terms in the matrix, are dependant on the coordinates chosen For example the Minkowski and Rindler metric are the same object, but look wildly different when written as matrices because they use different coordinate systems
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