Journal
COMPUTER PHYSICS COMMUNICATIONS
Volume 264, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cpc.2021.107944
Keywords
Quantum Monte Carlo method; Quantum spin model; Bose-Hubbard model
Funding
- Building of Consortia for the Development of Human Resources in Science and Technology, MEXT, Japan
- JSPS, Japan KAKENHI [19K03649]
- Institute for Solid State Physics, University of Tokyo
- Grants-in-Aid for Scientific Research [19K03649] Funding Source: KAKEN
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The Discrete Space Quantum Systems Solver (DSQSS) is a program package for solving quantum many-body problems on lattices, using the quantum Monte Carlo method in Feynman's path integral representation. It covers a broad range of problems and allows for finite temperature calculations of quantum spin and the Bose-Hubbard models by specifying parameters such as dimensions, lattice size, coupling constants, and temperature.
Y The Discrete Space Quantum Systems Solver (DSQSS) is a program package for solving quantum many-body problems defined on lattices. The DSQSS is based on the quantum Monte Carlo method in Feynman's path integral representation and covers a broad range of problems using flexible input files that define arbitrary unit cells in arbitrary dimensions and arbitrary matrix elements representing the interactions among an arbitrary number of degrees of freedom. Finite temperature calculations of quantum spin and the Bose-Hubbard models can be performed by specifying parameters such as the number of dimensions, the lattice size, coupling constants, and temperature. The present paper details the use of DSQSS and presents a number of applications thereof. (C) 2021 Elsevier B.V. All rights reserved.
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