$δ'$-Function Perturbations and Neumann Boundary-Conditions by Path Integration

Details $δ'$-Function Perturbations and Neumann Boundary-Conditions by Path Integration $δ'$-Function Perturbations and Neumann Boundary-Conditions by Path Integration

1994-02-18

arxiv.org/abs/hep-th/9402110v1

Physics

High Energy Physics

High Energy Physics - Theory

nine pages, plain Tex with AmSTeX macro-package

Scientific paper

10.1088/0305-4470/28/3/007

$\delta'$-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 $\delta'$-function perturbation; making their strengths infinitely repulsive one obtains Dirichlet, respectively Neumann boundary conditions in the path integral.

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