Quantum lattice model solver HΦ
Abstract
HΦ [aitchphi ] is a program package based on the Lanczostype eigenvalue solution applicable to a broad range of quantum lattice models, i.e., arbitrary quantum lattice models with twobody interactions, including the Heisenberg model, the Kitaev model, the Hubbard model and the Kondolattice model. While it works well on PCs and PCclusters, HΦ also runs efficiently on massively parallel computers, which considerably extends the tractable range of the system size. In addition, unlike most existing packages, HΦ supports finitetemperature calculations through the method of thermal pure quantum (TPQ) states. In this paper, we explain theoretical background and userinterface of HΦ. We also show the benchmark results of HΦ on supercomputers such as the K computer at RIKEN Advanced Institute for Computational Science (AICS) and SGI ICE XA (Sekirei) at the Institute for the Solid State Physics (ISSP).
 Publication:

Computer Physics Communications
 Pub Date:
 August 2017
 DOI:
 10.1016/j.cpc.2017.04.006
 arXiv:
 arXiv:1703.03637
 Bibcode:
 2017CoPhC.217..180K
 Keywords:

 Numerical linear algebra;
 Lattice fermion models;
 Quantum spin liquids;
 Condensed Matter  Strongly Correlated Electrons
 EPrint:
 15 pages, 8 figures