Home >  研究会等 > Investigation of quantum spin liquids with symmetric PEPS

Investigation of quantum spin liquids with symmetric PEPS

日程 : 2020年10月2日(金) 4:00 pm 〜 場所 : Zoom 開催(事前登録を下記リンク先にてお願い致します) 講師 : Dr. Ji-Yao Chen 所属 : Max-Planck-Institute of Quantum Optics 世話人 : 川島 直輝 (63260)
e-mail: kawashima@issp.u-tokyo.ac.jp

Quantum spin liquid state can be represented and efficiently characterized within the symmetric Projected Entangled Pair State (PEPS) framework. A prototypical example is the nearest neighbor (NN) resonating valence bond (RVB) state, which has been thoroughly studied on various lattices with PEPS. Here I will show, through suitable deformation of the local tensor of NN RVB state on square lattice, we can introduce long-range singlets into the wave function and drive the state into a topological Z_2 phase. This approach turns out to be quite general for quantum spin liquid problem, which I will briefly explain. Then I will present our recent work about SU(3) chiral spin liquid using this approach, where characteristic feature of SU(3)_1 chiral topological order is observed from PEPS entanglement spectrum.

ご登録はこちらからお進みください


(公開日: 2020年09月25日)