Zeitschriftenartikel:
S. Denk, V. Putz, M. Wohlgenannt:
"Consistent Construction of Perturbation Theory on Noncommutative Spaces";
European Physical Journal C,
45
(2006),
S. 263.
Kurzfassung englisch:
We examine the effect of non-local deformations on the applicability of interaction point time ordered perturbation theory (IPTOPT) based on the free Hamiltonian of local theories. The usual argument for the case of quantum field theory (QFT) on a noncommutative (NC) space (based on the fact that the introduction of star products in bilinear terms does not alter the action) is not applicable to IPTOPT due to several discrepancies compared to the naive path integral approach when noncommutativity involves time. These discrepancies are explained in detail. Besides scalar models, gauge fields are also studied. For both cases, we discuss the free Hamiltonian with respect to non-local deformations.
"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)
http://dx.doi.org/10.1140/epjc/s2005-02410-y
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.