QTRAJ 1.0: A Lindblad equation solver for heavy-quarkonium dynamics

被引：10

作者：

Omar, Hisham Ba ^{[1
]}

Angel Escobedo, Miguel ^{[2
]}

Islam, Ajaharul ^{[1
]}

Strickland, Michael ^{[1
]}

Thapa, Sabin ^{[1
]}

Vander Griend, Peter ^{[3
]}

Weber, Johannes Heinrich ^{[4
,5
]}

机构：

[1] Kent State Univ, Dept Phys, Kent, OH 44242 USA

[2] Univ Santiago de Compostela, Inst Galego Fis Altas Enerxias IGFAE, E-15782 Galicia, Spain

[3] Tech Univ Munich, Phys Dept, James Franck Str 1, D-85748 Garching, Germany

[4] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[5] IRIS Adlershof, D-12489 Berlin, Germany

来源：

COMPUTER PHYSICS COMMUNICATIONS | 2022年 / 273卷

基金：

欧洲研究理事会;

关键词：

Heavy quarkonium; Open quantum systems; Lindblad equation; Quantum trajectories; !text type='PYTHON']PYTHON[!/text] FRAMEWORK; BOUND-STATES; QUANTUM; QCD; SUPPRESSION; QUTIP; NRQCD;

D O I：

10.1016/j.cpc.2021.108266

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

We introduce an open-source package called QTraj that solves the Lindblad equation for heavy-quarkonium dynamics using the quantum trajectories algorithm. The package allows users to simulate the suppression of heavy-quarkonium states using externally-supplied input from 3+1D hydrodynamics simulations. The code uses a split-step pseudo-spectral method for updating the wave-function between jumps, which is implemented using the open-source multi-threaded FFTW3 package. This allows one to have manifestly unitary evolution when using real-valued potentials. In this paper, we provide detailed documentation of QTraj 1.0, installation instructions, and present various tests and benchmarks of the code. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：22

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