"Tunneling" Amplitudes of a Massless Quantum Field

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dc.creatorModanese, Giovanni
dc.date1998-05-04
dc.date.accessioned2026-07-07T04:32:22Z
dc.date.available2026-07-07T04:32:22Z
dc.descriptionWe propose a method for the approximate computation of the Green function of a scalar massless field subjected to potential barriers of given size and shape in spacetime. The potential of the barriers has the form V(phi)=xi(phi^2-phi_0^2)^2; xi is very large and phi_0 very close to zero, the product (xi phi_0^2) being finite and small. This is equivalent to the insertion of a suitable constraint in the functional integral for phi. The Green function contains a double Fourier transform of the characteristic function of the region where the potential has support.
dc.description6 pages, LaTeX
dc.identifierhttps://arxiv.org/abs/math-ph/9805003
dc.identifierhttp://arxiv.org/abs/math-ph/9805003
dc.identifierProceedings of the Sixth International Conference "Path Integrals from peV to TeV", Florence, 1998; editors R. Casalbuoni et al., World Scientific, 1999; pag. 307.
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/58167
dc.subjectMathematical Physics
dc.title"Tunneling" Amplitudes of a Massless Quantum Field
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