Functional renormalization group for three-dimensional quantum magnetism

被引：56
|
作者：
Iqbal, Yasir [1 ]
Thomale, Ronny [1 ]
Toldin, Francesco Parisen [1 ]
Rachel, Stephan [2 ]
Reuther, Johannes [3 ,4 ,5 ]
机构：
[1] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany
[2] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden, Germany
[3] Free Univ Berlin, Dahlem Ctr Complex Quantum Syst, D-14195 D- Berlin, Germany
[4] Free Univ Berlin, Fachbereich Phys, D-14195 D- Berlin, Germany
[5] Helmholtz Zentrum Berlin Mat & Energie, D-14109 Berlin, Germany
来源：
PHYSICAL REVIEW B | 2016年 / 94卷 / 14期
基金：
欧洲研究理事会;
关键词：
MONTE-CARLO-SIMULATION; HEISENBERG-ANTIFERROMAGNET; SPIN LIQUIDS; SYSTEMS; FERMION; MODELS;
D O I：
10.1103/PhysRevB.94.140408
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We formulate a pseudofermion functional renormalization group (PFFRG) scheme to address frustrated quantum magnetism in three dimensions. In a scenario where many numerical approaches fail due to sign problem or small system size, three-dimensional (3D) PFFRG allows for a quantitative investigation of the quantum spin problem and its observables. We illustrate 3D PFFRG for the simple cubic J(1)-J(2)-J(3) quantum Heisenberg antiferromagnet, and benchmark it against other approaches, if available.
引用
收藏
页数：5
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