*Satoshi Ejima1,3, Tatsuya Kaneko2, Florian Lange1, Shohei Miyakoshi4, Seiji Yunoki3,4,5, Holger Fehske1
(1. University Greifswald(Germany), 2. Columbia University(United States of America), 3. RIKEN CPR(Japan), 4. RIKEN CEMS(Japan), 5. RIKEN R-CCS(Japan))
Keywords:η-pairing, Mott insulator, DMRG