User: Guest  Login
Title:

Topology and Edge Modes in Quantum Critical Chains

Document type:
Zeitschriftenaufsatz
Author(s):
Verresen, Ruben; Jones, Nick G.; Pollmann, Frank
Abstract:
We show that topology can protect exponentially localized, zero energy edge modes at critical points between one-dimensional symmetry-protected topological phases. This is possible even without gapped degrees of freedom in the bulk—in contrast to recent work on edge modes in gapless chains. We present an intuitive picture for the existence of these edge modes in the case of noninteracting spinless fermions with time-reversal symmetry (BDI class of the tenfold way). The stability of this phenomen...     »
Journal title:
Physical Review Letters 2018-01
Year:
2018
Journal volume:
120
Journal issue:
5
Fulltext / DOI:
doi:10.1103/physrevlett.120.057001
Publisher:
American Physical Society (APS)
E-ISSN:
0031-90071079-7114
Date of publication:
31.01.2018
 BibTeX