Atomic Probes of Noncommutative Field Theory

Abstract

We consider the role of Lorentz symmetry in noncommutative field theory. We find that a Lorentz-violating standard-model extension involving ordinary fields is general enough to include any realisitc noncommutative field theory as a subset. This leads to various theoretical consequences, as well as bounds from existing experiments at the level of (10 TeV)${}^{-2}$ on the scale of the noncommutativity parameter.

Comments: 5 pages, talk presented at the second meeting on CPT and Lorentz Symmetry, Bloomington, Indiana, August 2001