Thread: Killing vector View Single Post
 P: 71 Let us denote by $X^i=(1,\vec 0)$ the Killing vector and by $u^i(s)$ a tangent vector of a geodesic, where $s$ is some affine parameter. What physical significance do the scalar quantity $X_iu^i$ and its conservation hold? If any...? I have seen this in may books and exam questions. I wonder what it means...