A papre using HΦ “Ground-state properties of Na2IrO3 determined from an ab initio Hamiltonian and its extensions containing Kitaev and extended Heisenberg interactions” is published !

In this paper (arXiv:1611.03614, Phys. Rev. B 96, 054434 (2017)),
by using exact diagonalization method and
the tensor network method (iPEPS),
they analyze an ab initio effective spin model
for describing Na2IrO3.
In the analysis the exact diagonalizations,
they use HΦ (for calculating ground-state energy shown in Fig.4,
they use HΦ).