Volume 256 - 34th annual International Symposium on Lattice Field Theory (LATTICE2016) - Algorithms and Machines
Monte Carlo simulation of $\phi^4_2$ and $O(N)\,\phi^4_3$ theories
B. De Palma,* M. Guagnelli
*corresponding author
Full text: pdf
Pre-published on: December 27, 2016
Published on: March 24, 2017
Abstract
We report lattice simulations of $\phi_2^4$ and $O(N)\phi^4$ models, performed by means of a Monte Carlo method based on the all-order strong coupling expansion (worm algorithm). The investigation of the non-perturbative features of the $\phi^4$ continuum limit in two dimensions lead us to the result
g/μ 2 = 11.15 ± 0.06 stat ± 0.03 syst for the critical coupling. Furthermore we present preliminary
results for the three-dimensional $O(2)\phi^4$ model using the worm algorithm with the extention to
$O(N)\phi^4$ in D dimensions.
DOI: https://doi.org/10.22323/1.256.0277
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