Remarks on some new models of interacting quantum fields with indefinite metric
arXiv:math-ph/0501034 · doi:10.1016/S0034-4877(97)85890-9
Abstract
We study quantum field models in indefinite metric. We introduce the modified Wightman axioms of Morchio and Strocchi as a general framework of indefinite metric quantum field theory (QFT) and present concrete interacting relativistic models obtained by analytical continuation from some stochastic processes with Euclidean invariance. As a first step towards scattering theory in indefinite metric QFT, we give a proof of the spectral condition on the translation group for the relativistic models.
13 pages