234 citations · 1.6k across the 33 of their papers we have counts for
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cond-mat.str-el2015★ 37 cited
Variational tensor network renormalization in imaginary time: Two-dimensional quantum compass model at finite temperature
Piotr Czarnik, Jacek Dziarmaga, Andrzej M. Oleś
Progress in describing thermodynamic phase transitions in quantum systems is obtained by noticing that the Gibbs operator for a two-dimensional (2D) lattice system with a…
cond-mat.str-el2015★ 89 cited
Variational Approach to Projected Entangled Pair States at Finite Temperature
Piotr Czarnik, Jacek Dziarmaga
The projected entangled pair state (PEPS) ansatz can represent a thermal state in a strongly correlated system. We introduce a novel variational algorithm to optimize this tensor n…