English Classical XY model Cited by user Pfm77 on 14 Jul 2011 The classical XY model (sometimes also called classical rotor (rotator) model or O(2) model) is a lattice model of statistical mechanics.
English Griffiths inequality Cited by user Sodin on 21 Jun 2011 In statistical mechanics, the Griffiths inequality, sometimes also called Griffiths–Kelly–Sherman inequality or GKS inequality, named after Robert B.