Abstract
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 quantum Heisenberg antiferromagnet, and benchmark it against other approaches, if available.
- Received 21 April 2016
- Revised 30 August 2016
DOI:https://doi.org/10.1103/PhysRevB.94.140408
©2016 American Physical Society