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Abstract: The -Coulomb phase- is an emergent state for lattice models particularlyhighly frustrated antiferromagnets which have local constraints that can bemapped to a divergence-free -flux-. The coarse-grained version of this flux orpolarization behave analogously to electric or magnetic fields; in particular,defects at which the local constraint is violated behave as effective chargeswith Coulomb interactions. I survey the derivation of the characteristicpower-law correlation functions and the pinch-points in reciprocal space plotsof diffuse scattering, as well as applications to magnetic relaxation,quantum-mechanical generalizations, phase transitions to long-range-orderedstates, and the effects of disorder.



Autor: Christopher L. Henley Cornell U. and Boston U.

Fuente: https://arxiv.org/







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