title: Noncommutative field theory and Lorentz violation.
abstract: 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).
authors.affiliation: Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA.
authors.forename: S M
authors.initials: SM
authors.lastname: Carroll
authors.forename: J A
authors.initials: JA
authors.lastname: Harvey
authors.forename: V A
authors.initials: VA
authors.lastname: Kostelecký
authors.forename: C D
authors.initials: CD
authors.lastname: Lane
authors.forename: T
authors.initials: T
authors.lastname: Okamoto