BROWSE

Related Scientist

CALDES's photo.

CALDES
원자제어 저차원 전자계 연구단
more info

ITEM VIEW & DOWNLOAD

Many-Body Invariants for Chern and Chiral Hinge Insulators

Cited 0 time in webofscience Cited 0 time in scopus
13 Viewed 0 Downloaded
Title
Many-Body Invariants for Chern and Chiral Hinge Insulators
Author(s)
Kang, Byungmin; Lee, Wonjun; Gil Young Cho
Publication Date
2021-01
Journal
PHYSICAL REVIEW LETTERS, v.126, no.1
Publisher
AMER PHYSICAL SOC
Abstract
We construct new many-body invariants for 2D Chern and 3D chiral hinge insulators characterizing quantized pumping of bulk dipole and quadrupole moments. The many-body invariants are written entirely in terms of many-body ground state wave functions on a torus geometry with twisted boundary conditions and a set of unitary operators. We present a number of supporting arguments for the invariants via topological field theory interpretation, adiabatic pumping argument, and direct mapping to free-fermion band indices. Therefore, the invariants explicitly encircle several different pillars of theoretical descriptions of topological phases. Furthermore, our many-body invariants are written in forms which can be directly employed in various numerics including the exact diagonalization and the density-matrix renormalization group simulations. We finally confirm our invariants by numerical computations including an infinite density-matrix renormalization group on quasi-one-dimensional systems.
URI
https://pr.ibs.re.kr/handle/8788114/9476
DOI
10.1103/PhysRevLett.126.016402
ISSN
0031-9007
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
Files in This Item:
There are no files associated with this item.

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse