• Medientyp: E-Book; Video
  • Titel: Bulk-boundary correspondence for disordered free-fermion topological phases
  • Beteiligte: Max, Christopher [Verfasser:in]; Schulz-Baldes, Hermann (Organization) [Sonstige Person, Familie und Körperschaft]; Prodan, Emil (Organization) [Sonstige Person, Familie und Körperschaft]; Villegas-Blas, Carlos (Organization) [Sonstige Person, Familie und Körperschaft]
  • Erschienen: [Erscheinungsort nicht ermittelbar]: Banff International Research Station (BIRS) for Mathematical Innovation and Discovery, 2019
  • Erschienen in: Topological Phases of Interacting Quantum Systems (19w5034) ; (Jan. 2019)
  • Umfang: 1 Online-Ressource (183 MB, 00:52:20:02)
  • Sprache: Englisch
  • DOI: 10.5446/56103
  • Identifikator:
  • Entstehung:
  • Anmerkungen: Audiovisuelles Material
  • Beschreibung: Guided by the many-particle quantum theory of interacting systems, we develop a uniform classification scheme for topological phases of disordered gapped free fermions, encompassing all symmetry classes of the Tenfold Way. We apply this scheme to give a mathematically rigorous proof of bulk-boundary correspondence. To that end, we construct real C^\ast-algebras harbouring the bulk and boundary data of disordered free-fermion ground states. These we connect by a natural bulk-to-boundary short exact sequence, realising the bulk system as a quotient of the half-space theory modulo boundary contributions. To every ground state, we attach two classes in different pictures of real operator K-theory (or KR-theory): a bulk class, using Van Daele's picture, along with a boundary class in Kasparov's Fredholm picture. We then show that the connecting map for the bulk-to-boundary sequence maps these KR-theory classes to each other
  • Zugangsstatus: Freier Zugang
  • Rechte-/Nutzungshinweise: Namensnennung - Nicht kommerziell (CC BY-NC)