On perturbative quantum field theory with boundary
WoS ID: 000220059100004
Scopus ID: 1242322111
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. (C) 2004 Elsevier B.V. All rights reserved.