New universality class for the three-dimensional XY model with correlated impurities: Application to ${}^4$He in aerogels

Carlos Vásquez-Romero, R. Paredes-Villegas, A. Hasmy +1

Encouraged by experiments on ${}^4$He in aerogels, we confine planar spins in the pores of simulated aerogels (diffusion limited cluster-cluster aggregation) in order to study the ef…