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Elsevier, Nuclear Physics B, 3(682), p. 585-617, 2004

DOI: 10.1016/j.nuclphysb.2004.01.018

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On perturbative quantum field theory with boundary

Journal article published in 2003 by Z. Bajnok, G. Böhm, G. Takács ORCID
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Boundary quantum field theory is investigated in the Lagrangian framework. Models are defined perturbatively around the Neumann boundary condition. The analyticity properties of the Green functions are analyzed: Landau equations, Cutkosky rules together with the Coleman-Norton interpretation are derived. Illustrative examples as well as argument for the equivalence with other perturbative expansions are presented.