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Journal Club for Condensed Matter Physics

Tractable Transport Calculations through Artificial Dissipation

Published Feb 28, 2022• 0 citations
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Abstract

1. Dissipation-assisted operator evolution method for capturing hydrodynamic transport Authors: Tibor Rakovszky, C. W. von Keyserlingk, and Frank Pollmann Phys. Rev. B 105, 075131 (2022); DOI: 10.1103/PhysRevB.105.075131 2. Operator backflow and the classical simulation of quantum transport Authors: C. W. von Keyserlingk, Frank Pollmann, and Tibor Rakovszky arXiv:2111.09904 Recommended with a commentary by E. Miles […]

DOI
10.36471/jccm_february_2022_02

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  1. Dissipation-assisted operator evolution method for capturing hydrodynamic transport Authors: Tibor Rakovszky, C. W. von Keyserlingk, and Frank Pollmann Phys. Rev. B 105, 075131 (2022); DOI: 10.1103/PhysRevB.105.075131 2. Operator backflow and the classical simulation of quantum transport Authors: C. W. von Keyserlingk, Frank Pollmann, and Tibor Rakovszky arXiv:2111.09904 Recommended with a commentary by E. Miles […]
Transport properties are among the most practically important features of materials, yet their precise calculation in strongly interacting systems poses a formidable challenge. One might even expect that it requires a quantum computer. The authors introduce an algorithm that tackles this challenge with only moderate resources on a classical computer. It relies on introducing an artificial dissipation process that only affects nonlocal observables, thus reducing the computational cost without strongly influencing physically relevant quantities. The algorithm is tested on various paradigmatic models with good convergence results.