A Rigorous Real Time Feynman Path Integral
Abstract
Using improper Riemann integrals, we will formulate a rigorous version of the real-time, time-sliced Feynman path integral for the L2 transition probability amplitude. We will do this for nonvector potential Hamiltonians with potential which has at most a finite number of discontinuities and singularities. We will also provide a Nonstandard Analysis version of our formulation.
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