title: Vector boson excitations near deconfined quantum critical points.
abstract: We show that the Néel states of two-dimensional antiferromagnets have low energy vector boson excitations in the vicinity of deconfined quantum critical points. We compute the universal damping of these excitations arising from spin-wave emission. Detection of such a vector boson will demonstrate the existence of emergent topological gauge excitations in a quantum spin system.
authors.affiliation: Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: Yejin
authors.initials: Y
authors.lastname: Huh
authors.forename: Philipp
authors.initials: P
authors.lastname: Strack
authors.forename: Subir
authors.initials: S
authors.lastname: Sachdev