Global quantum discord and thermal tensor network in XXZ chains at finite temperatures
Sign Up to like & getrecommendations! Published in 2019 at "Physica B: Condensed Matter"
DOI: 10.1016/j.physb.2019.04.021
Abstract: Abstract We characterize multi-site quantum correlations in 1D finite-size XXZ chains at finite temperatures with global quantum discord. With the help of an exact diagonalization method and a thermal-tensor-network algorithm, the thermal-state discord G (… read more here.
Keywords: chains finite; finite temperatures; quantum; thermal tensor ... See more keywords
Thermal tensor renormalization group simulations of square-lattice quantum spin models
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review B"
DOI: 10.1103/physrevb.100.045110
Abstract: In this work, we benchmark the well-controlled and numerically accurate exponential thermal tensor renormalization group (XTRG) in the simulation of interacting spin models in two dimensions. Finite temperature introduces a thermal correlation length, which justifies… read more here.
Keywords: thermal tensor; temperature; renormalization group; spin models ... See more keywords
Conformal Thermal Tensor Network and Universal Entropy on Topological Manifolds
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.174429
Abstract: Partition functions of quantum critical systems, expressed as conformal thermal tensor networks, are defined on various manifolds which can give rise to universal entropy corrections. Through high-precision tensor network simulations of several quantum chains, we… read more here.
Keywords: universal entropy; conformal thermal; thermal tensor; tensor network ... See more keywords