English

Can QFT on Moyal-Weyl spaces look as on commutative ones?

High Energy Physics - Theory 2012-09-28 v1

Abstract

We sketch a natural affirmative answer to the question based on a joint work [11] with J. Wess. There we argue that a proper enforcement of the "twisted Poincare'" covariance makes any differences (xy)μ(x-y)^\mu of coordinates of two copies of the Moyal-Weyl deformation of Minkowski space like undeformed. Then QFT in an operator approach becomes compatible with (minimally adapted) Wightman axioms and time-ordered perturbation theory, and physically equivalent to ordinary QFT, as observables involve only coordinate differences.

Keywords

Cite

@article{arxiv.0705.1120,
  title  = {Can QFT on Moyal-Weyl spaces look as on commutative ones?},
  author = {Gaetano Fiore},
  journal= {arXiv preprint arXiv:0705.1120},
  year   = {2012}
}

Comments

Talk given at the 21st Nishinomiya-Yukawa Memorial Symposium on Theoretical Physics "Noncommutative Geometry and Spacetime in Physics", Nishinomiya-Kyoto, Nov. 2006