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Boundary Conditions As Dynamical Fields, V. Parameswaran Nair, Dimitra Karabali
Boundary Conditions As Dynamical Fields, V. Parameswaran Nair, Dimitra Karabali
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The possibility of treating boundary conditions in terms of a bilocal dynamical field is formalized in terms of a boundary action. This allows for a simple path-integral perturbation theory approach to physical effects such as radiation from a time-dependent boundary. The nature of the action which governs the dynamics of the bilocal field is investigated for a limited case (which includes the Robin boundary conditions).