In this paper with study phase transitions of the q-state Potts model, through a number of unsupervised machine learning techniques, namely Principal Component Analysis (PCA), k-means clustering, Uniform Manifold Approximation and Projection (UMAP), and Topological Data Analysis (TDA). Even though in all cases we are able to retrieve the correct critical temperatures Tc(q), for q=3,4 and 5, results show that non-linear methods as UMAP and TDA are less dependent on finite size effects, while still being able to distinguish between first and second order phase transitions. This study may be considered as a benchmark for the use of different unsupervised machine learning algorithms in the investigation of phase transitions.
@article{arxiv.2112.06735,
title = {Unsupervised machine learning approaches to the $q$-state Potts model},
author = {Andrea Tirelli and Danyella O. Carvalho and Lucas A. Oliveira and J. P. Lima and Natanael C. Costa and Raimundo R. dos Santos},
journal= {arXiv preprint arXiv:2112.06735},
year = {2022}
}
Comments
Added computation of critical exponents; exposition improved