6533b838fe1ef96bd12a470d

RESEARCH PRODUCT

Ising model universality for two-dimensional lattices

Mohammad KatootRamon VillanovaRamon VillanovaWolfhard Janke

subject

PhysicsNuclear and High Energy PhysicsDelaunay triangulationHigh Energy Physics::LatticeHigh Energy Physics - Lattice (hep-lat)Monte Carlo methodFOS: Physical sciencesUniversality (dynamical systems)High Energy Physics - LatticeCriticalityLattice (order)Ising modelStatistical physicsScalingCritical exponent

description

We use the single-cluster Monte Carlo update algorithm to simulate the Ising model on two-dimensional Poissonian random lattices of Delaunay type with up to 80\,000 sites. By applying reweighting techniques and finite-size scaling analyses to time-series data near criticality, we obtain unambiguous support that the critical exponents for the random lattice agree with the exactly known exponents for regular lattices, i.e., that (lattice) universality holds for the two-dimensional Ising model.

https://doi.org/10.1016/0370-2693(93)91633-x