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Accueil du site > Publications > Publications 2008 > Gauge theory picture of an ordering transition in a dimer model

Gauge theory picture of an ordering transition in a dimer model

D. Charrier, F. Alet, P. Pujol

par Webmaster - 4 juin 2008

Phys. Rev. Lett. 101, 167205 (2008), arXiv:0806.0559

We study a phase transition in a 3D lattice gauge theory, a "coarse-grained" version of a classical dimer model. Duality arguments indicate that the dimer lattice theory should be dual to a XY model coupled to a gauge field with geometric frustration. The transition between a Coulomb phase with dipolar correlations and a long range ordered columnar phase is understood in terms of a Higgs mechanism. Monte Carlo simulations of the dual model indicate a continuous transition with exponents close but apparently different from those of the 3D XY model. The continuous nature of the transition is confirmed by a flowgram analysis.