Why There Are No Circuit Equations in GR, and Hence No Nonlinear GWsCan you explain how a "geometric coupling" 1. breaks the symmetry of E_ij=C_0i0j (Weyl curvature) and its Hodge dual B__ij, 2. how this...
Null Geodesics vs 3+1 DecompositionThe confusion that exists between null geodesics and 3+1 decomposition. For ds^2=\dot{\phi}=\dot{\theta}=0, where the dot denotes diff...
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