Noncommutative field theory and Lorentz violation.
The role of Lorentz symmetry in noncommutative field theory is considered. Any realistic noncommutative theory is found to be physically equivalent to a subset of a general Lorentz-violating standard-model extension involving ordinary fields. Some theoretical consequences are discussed. Existing experiments bound the scale of the noncommutativity parameter to (10 TeV)(-2).
Carroll
S M
SM
Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
Harvey
J A
JA
Kostelecký
V A
VA
Lane
C D
CD
Okamoto
T
T