Perturbative ultraviolet and infrared dynamics of noncommutative quantum field theory
Abstract
Description
Perturbative aspects of ultraviolet and infrared dynamics of noncommutative quantum field theory is examined in detail. It is observed that high loop momentum contribution to the nonplanar diagram develops a new infrared singularity with respect to the external momentum. This singular behavior is closely related to that of ultraviolet divergence of planar diagram. It is also shown that such a relation is precise in noncommutative Yang-Mills theory, but the same feature does not persist in noncommutative generalization of QED.
13 pages, 2 figures, Talk given at XXXth International Conference on High Energy Physics (ICHEP2000), July 27-August 2, Osaka, Japan, Comments and references added
13 pages, 2 figures, Talk given at XXXth International Conference on High Energy Physics (ICHEP2000), July 27-August 2, Osaka, Japan, Comments and references added