ar X iv : c on d - m at / 9 60 80 77 v 1 2 0 A ug 1 99 6 Boundary effects on the scaling of the superfluid density
نویسنده
چکیده
In Ref.[1] we used the XY model to investigate numerically the finite–size scaling (FSS) properties of the superfluid density of superfluid films with respect to the film thickness H . The superfluid density ρs is related to the helicity modulus Υ of the XY model through ρs = (m/h̄) Υ where m denotes the mass of the helium atom[2]. We used rather thin films up to H = 24 and found that we were able to collapse our data for the helicity modulus onto a single curve employing the scaling expression
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