${\delta }^{\prime }$-Function Perturbations and Neumann Boundary-Conditions by Path Integration

Abstract

${\delta }^{\prime }$-function perturbations and Neumann boundary conditions are incorporated into the path integral formalism. The starting point is the consideration of the path integral representation for the one dimensional Dirac particle together with a relativistic point interaction. The non-relativistic limit yields either a usual $\delta$-function or a ${\delta }^{\prime }$-function perturbation; making their strengths infinitely repulsive one obtains Dirichlet, respectively Neumann boundary conditions in the path integral.

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References in corpus (2)

• Path Integration Via Summation of Perturbation Expansions and Applications to Totally Reflecting Boundaries, and Potential Steps
• $\delta$-Function Perturbations and Boundary Problems by Path Integration

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