Search for Deconfined Criticality: SU(2) Déjà Vu

Details Search for Deconfined Criticality: SU(2) Déjà Vu Search for Deconfined Criticality: SU(2) Déjà Vu

2008-05-28

arxiv.org/abs/0805.4334v1

Physics

Condensed Matter

Statistical Mechanics

4 revtex pages + 5 figures

Scientific paper

Monte Carlo simulations of the SU(2)-symmetric deconfined critical point action reveal strong violations of scale invariance for the deconfinement transition. We find compelling evidence that the generic runaway renormalization flow of the gauge coupling is to a weak first order transition, similar to the case of U(1)$\times$U(1) symmetry. Our results imply that recent numeric studies of the N\`{e}el antiferromagnet to valence bond solid quantum phase transition in SU(2)-symmetric models were not accurate enough in determining the nature of the transition.

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