Exploring neural network training strategies to determine phase transitions in frustrated magnetic models

CORTE, I.; ACEVEDO, S.; ARLEGO, M.; LAMAS, C.A.

COMPUTACIONAL MATERIALS SCIENCE

Elsevier B.V.

Lugar: New York; Año: 2021 vol. 198 p. 110702 - 110712

0927-0256

The transfer learning of a neural network is one of its most outstanding aspects and has given supervised learning with neural networks a prominent place in data science. Here we explore this feature in the context of strongly interacting many-body systems. Through case studies, we test the potential of this deep learning technique to detect phases and their transitions in frustrated spin systems, using fully-connected and convolutional neural networks. In addition, we explore a recently-introduced technique, which is at the middle point of supervised and unsupervised learning. It consists in evaluating the performance of a neural network that has been deliberately ?confused? during its training. To properly demonstrate the capability of the ?confusion? and transfer learning techniques, we apply them to a paradigmatic model of frustrated magnetism in two dimensions, to determine its phase diagram and compare it with high-performance Monte Carlo simulations.