Abstract
We analyze renormalization and the high-temperature expansion of the one-loop effective action of the space-time noncommutative theory by using the zeta-function regularization in the imaginary-time formalism (i.e., on ). Interestingly enough, there are no mixed (nonplanar) contributions to the counterterms as well as to the power-law high-temperature asymptotics. We also study the Wick rotation and formulate assumptions under which the real and imaginary-time formalisms are equivalent.
- Received 7 June 2007
DOI:https://doi.org/10.1103/PhysRevD.76.065014
©2007 American Physical Society