The geometric properties of critical fluctuations in the three-dimensional (3D) XY model are analyzed. The 3D XY model is a lattice model describing superfluids. We present a direct evaluation of the Hausdorff dimension D-H of the vortex loops which are the critical fluctuations of the 3D XY model. We also present analytical arguments for why Theta in the scaling relation eta(phi)+D-H=2+Theta between D-H and the anomalous scaling dimension of the corresponding field theory must be zero.
File in questo prodotto:
Non ci sono file associati a questo prodotto.