Monday, July 29, 2013

1307.6860 (Yejin Huh et al.)

Vector boson excitations near deconfined quantum critical points    [PDF]

Yejin Huh, Philipp Strack, Subir Sachdev
We show that the N\'eel 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.
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