Recent content by mongolianbeef

Homework Statement The Komar mass of a Schwarzschild geometry can be written as \frac{1}{4\pi}\int_{S}n^{\alpha}\sigma_{\beta} \nabla_{\alpha} \xi^{\beta}dA, where n^{\alpha} and \sigma_{\beta} are timelike and spacelike normal vectors respectively. How does one actually go about evaluating...