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

页数：5

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