Some boundary effects in quantum field theory
arXiv:hep-th/0409134 · doi:10.1103/PhysRevD.70.065018
Abstract
We have constructed a quantum field theory in a finite box, with periodic boundary conditions, using the hypothesis that particles living in a finite box are created and/or annihilated by the creation and/or annihilation operators, respectively, of a quantum harmonic oscillator on a circle. An expression for the effective coupling constant is obtained showing explicitly its dependence on the dimension of the box.
12 pages, Latex
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