Study of the photon's pole structure in the noncommutative Schwinger model

Eur Phys J C Part Fields. 2014;74(6):2921. doi: 10.1140/epjc/s10052-014-2921-4. Epub 2014 Jun 12.

Abstract

The photon self-energy of the noncommutative Schwinger model at two- and three-loop order is analyzed. It is shown that the mass spectrum of the model does not receive any correction from the noncommutativity parameter ([Formula: see text]) at these orders. Also it remains unchanged to all orders. The exact one-loop effective action for the photon is also calculated.