Group Invariant Quantum Many-Body Scars and Unconventional Electron Pairing

          @misc{ scivideos_oai:cds.cern.ch:3025651,
            doi = {},
            url = {https://videos.cern.ch/record/3025651},
            author = {},
            keywords = {},
            language = {en},
            title = {Group Invariant Quantum Many-Body Scars and Unconventional Electron Pairing},
            publisher = {},
            year = {2026},
            month = {may},
            note = {oai:cds.cern.ch:3025651 see, \url{https://scivideos.org/cern-cds/3025651}}
          }
          

Abstract

Many-body scar subspaces decouple from the rest of the Hilbert space which protects the order present in scar states from thermalisation. I will discuss a form of general conditions leading to this phenomenon known as the Group Invariant formalism. As an example, I will show that the Yang's eta-pairing states are many-body scars in many standard condensed matter models such as the 1-orbital Fermi-Hubbard model of spin-1/2 electrons on a lattice. In the 2-orbital case scar states feature strong unconventional superconducting pairing. I will also show that scars themselves may be non-integrable, forming an independent thermal bath with distinct thermal expectation values.

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