Annales De L Institut Henri Poincare-physique Theorique
Explicit formulas for correlation functions of ground states of the 1 dimensional XY model
Taku Matsui
Abstract
We consider the odd correlation functions of pure ground states for the 1 dimensional XY model. A reduction formula is proved. 1 and 2 point functions are computed explicitly On considere les fonctions de correlation impaires des etats fondamentaux purs pour le modele XY sur un reseau a 1 dimension. On demontre une formule de reduction. On calcule aussi les fonctions de correlation a 1 point et a 2 points