Finite size dependence of scaling functions of the three-dimensional O(4) model in an external field
Abstract
We calculate universal finite size scaling functions for the order parameter and the longitudinal susceptibility of the three-dimensional O(4) model. The phase transition of this model is supposed to be in the same universality class as the chiral transition of two-flavor QCD. The scaling functions serve as a testing device for QCD simulations on small lattices, where, for example, pseudocritical temperatures are difficult to determine. In addition, we have improved the infinite volume limit parametrization of the scaling functions by using newly generated high statistics data for the 3d O(4) model in the high temperature region on an L=120 lattice.
Cite
@article{arxiv.1402.5302,
title = {Finite size dependence of scaling functions of the three-dimensional O(4) model in an external field},
author = {J. Engels and F. Karsch},
journal= {arXiv preprint arXiv:1402.5302},
year = {2015}
}
Comments
16 pages, 6 figures, 9 eps-files, Latex2e, typos corrected, extended discussion of corrections to scaling, updated references, version to appear in Phys. Rev. D 89