A paper using HΦ “Excitons and Dark Fermions as Origins of Mott Gap, Pseudogap and Superconductivity in Cuprate Superconductors — General Concept and Basic Formalism Based on Gap Physics” is published !

In this paper ((arXiv:1804.05301, J. Phys. Soc. Jpn. 88, 024701 (2019))), they reconsider the theory of doped Mott insulators based on the recent understanding of the singularity in the self energies. As an examination of their theory, they used the results of the finite-temperature calculations for the Hubbard model obtained by HΦ.