Monte Carlo Simulations with Symanzik's Improved Actions in the Lattice 0(3) Non-Linear sigma-Model

摘要

The scaling properties of the lattice 0(3) non-linear delta-model are studied. The mass-gap, energy-momentum dispersion, correlation functions are measured by numerical Monte Carlo methods. Symanzik's tree-level and 1-loop improved actions are compared to the standard (nearest neigbour) action. (ERA citation 09:024008)