title: Constraints on relativity violations from gamma-ray bursts.
abstract: Tiny violations of the Lorentz symmetry of relativity and the associated discrete CPT symmetry could emerge in a consistent theory of quantum gravity such as string theory. Recent evidence for linear polarization in gamma-ray bursts improves existing sensitivities to Lorentz and CPT violation involving photons by factors ranging from ten to a million.
authors.affiliation: Physics Department, Indiana University, Bloomington, Indiana 47405, USA.
authors.forename: V Alan
authors.initials: VA
authors.lastname: Kostelecký
authors.affiliation: Physics Department, Swarthmore College, Swarthmore, Pennsylvania 19081, USA.
authors.forename: Matthew
authors.initials: M
authors.lastname: Mewes