On the formulation of SPDEs leading to local, relativistic QFTs with indefinite metric and nontrivial S-matrix

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dc.creatorAlbeverio, S.
dc.creatorGottschalk, H.
dc.creatorWu, J. -L.
dc.date2004-09-14
dc.date.accessioned2026-07-07T04:31:27Z
dc.date.available2026-07-07T04:31:27Z
dc.descriptionWe discuss Euclidean covariant vector random fields as the solution of stochastic partial differential equations of the form $DA=η$, where $D$ is a covariant (w.r.t. a representation τof $SO(d)$) differential operator with "positive mass spectrum" and $η$ is a non-Gaussian white noise. We obtain explicit formulae for the Fourier transformed truncated Wightman functions, using the analytic continuation of Schwinger functions discussed by Becker, Gielerak and Lugewicz. Based on these formulae we give necessary and sufficient conditions on the mass spectrum of $D$ which imply nontrivial scattering behaviour of relativistic quantum vector fields associated to the given sequence of Wightman functions. We compute the scattering amplitudes explicitly and we find that the masses of particles in the obtained theory are determined by the mass spectrum of $D$.
dc.identifierhttps://arxiv.org/abs/math-ph/0409027
dc.identifierhttp://arxiv.org/abs/math-ph/0409027
dc.identifierRept.Math.Phys. 40 (1997) 385-394
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/57818
dc.subjectMathematical Physics
dc.subject81T10; 81T05
dc.titleOn the formulation of SPDEs leading to local, relativistic QFTs with indefinite metric and nontrivial S-matrix
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