Fourier Transforms of Lorentz Invariant Functions (2002)
Wurm, Alexander, Krausz, Nurit, DeWitt-Morette, Cecile, Berg, Marcus
Fourier transforms of Lorentz invariant functions in Minkowski space, with support on both the timelike and the spacelike domains are performed by means of direct integration. The cases of 1+1 and...
Exact Evolution Operator on Non-compact Group Manifolds (1997)
Free quantal motion on group manifolds is considered. The Hamiltonian is given by the Laplace -- Beltrami operator on the group manifold, and the purpose is to get the (Feynman's) evolution kernel....