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Titel:

Gapless Topological Phases and Symmetry-Enriched Quantum Criticality

Dokumenttyp:
Zeitschriftenaufsatz
Autor(en):
Verresen, Ruben; Thorngren, Ryan; Jones, Nick G.; Pollmann, Frank
Abstract:
We introduce topological invariants for gapless systems and study the associated boundary phenomena. More generally, the symmetry properties of the low-energy conformal field theory (CFT) provide discrete invariants establishing the notion of symmetry-enriched quantum criticality. The charges of nonlocal scaling operators, or more generally, of symmetry defects, are topological and imply the presence of localized edge modes. We primarily focus on the 1+1d case where the edge has a topological de...     »
Zeitschriftentitel:
Physical Review X 2021-12
Jahr:
2021
Band / Volume:
11
Heft / Issue:
4
Volltext / DOI:
doi:10.1103/physrevx.11.041059
Verlag / Institution:
American Physical Society (APS)
E-ISSN:
2160-3308
Publikationsdatum:
23.12.2021
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