中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 近代物理研究所
  3. 中国科学院近代物理研究所
PairDiag: An exact diagonalization program for solving general pairing Hamiltonians

文献类型：期刊论文

作者Liu, Xiao-Yu1,2,3; Qi, Chong1
刊名COMPUTER PHYSICS COMMUNICATIONS
出版日期2021-02-01
卷号259页码:8
关键词General pairing Hamiltonian Diagonalization Lanczos algorithm
ISSN号0010-4655
DOI10.1016/j.cpc.2020.107349
通讯作者Qi, Chong(chongq@kth.se)
英文摘要We present a program for solving exactly the general pairing Hamiltonian based on diagonalization. The program generates the seniority-zero shell-model-like basis vectors via the '01' inversion algorithm. The Hamiltonian matrix is constructed in this seniority-zero space. The program evaluates all non-zero elements of the Hamiltonian matrix "on the fly" using the scattering operator and a search algorithm. The matrix is diagonalized by using the iterative Lanczos algorithm. The OpenMP parallel program thus developed, PairDiag, can efficiently calculate the ground-state eigenvalue and eigenvector of the general pairing Hamiltonian for both the even-mass and the odd-mass system. The program is packaged in a Fortran module, which makes it easy to use the program to replace the BCS approximation in standard self-consistent mean field calculations. For systems with dimension around 10(8), the calculation can be done within hours on standard desktop computers. (C) 2020 The Authors. Published by Elsevier B.V.
资助项目[201700260183]
WOS研究方向Computer Science ; Physics
语种英语
WOS记录号WOS:000599925900005
出版者ELSEVIER
源URL[http://119.78.100.186/handle/113462/138456]  
专题中国科学院近代物理研究所
通讯作者Qi, Chong
作者单位1.Royal Inst Technol, Dept Phys, S-10405 Stockholm, Sweden
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Xiao-Yu,Qi, Chong. PairDiag: An exact diagonalization program for solving general pairing Hamiltonians[J]. COMPUTER PHYSICS COMMUNICATIONS,2021,259:8.
APA Liu, Xiao-Yu,&Qi, Chong.(2021).PairDiag: An exact diagonalization program for solving general pairing Hamiltonians.COMPUTER PHYSICS COMMUNICATIONS,259,8.
MLA Liu, Xiao-Yu,et al."PairDiag: An exact diagonalization program for solving general pairing Hamiltonians".COMPUTER PHYSICS COMMUNICATIONS 259(2021):8.

入库方式： OAI收割

来源：近代物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。