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Towards Euclidean Theory of Infrared Singular Quantum Fields | | A. G. Smirnov
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18 May 2002 | | Journal: | J.Math.Phys. 44 (2003) 2058-2076 | | Subject: | Mathematical Physics; Functional Analysis | math-ph math.FA math.MP | | Abstract: | A new generalized formulation of the spectral condition is proposed for quantum fields with highly singular infrared behavior whose vacuum correlation functions are well defined only under smearing with analytic test functions in momentum space. The Euclidean formulation of QFT developed by Osterwalder and Schrader is extended to theories with infrared singular indefinite metric. The corresponding generalization of the reconstruction theorem is obtained. The fulfilment of the generalized spectral condition is verified for quantum fields representable by infinite series in the Wick powers of indefinite metric free fields. | | Source: | arXiv, math-ph/0205024 | | Services: | Forum | Review | PDF | Favorites | |
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