18 papers
The "Moiré Capacitor Effect" and Stabilization of Fractional Chern Insulators in Rhombohedral Graphene Superlattices
Nicolas Regnault, Heqiu Li, Yves H. Kwan +2
While the necessity of a moiré potential for fractional Chern insulators (FCIs) in rhombohedral graphene-hBN superlattices, first predicted in Ref. 1, is now grounded in experiment…
Breakdown of Monotonic Impurity Entropy Flow in -Symmetric Multichannel Kondo Systems
Pradip Kattel, Abay Zhakenov, Natan Andrei
We study a -symmetric non-Hermitian multichannel Kondo model consisting of a pair of spin- impurities coupled to conduction-electron channels through com…
Monotonic and non-Nonmonotonic Impurity Entropy flows in a -Symmetric Kondo Model
Pradip Kattel, Abay Zhakenov, Natan Andrei
Quantum impurity models provide a paradigmatic setting for studying Kondo screening, boundary criticality, and impurity entropy. While these phenomena are well understood in unitar…
Exact Dynamics of Topological Order Across a CDW--SPT Transition
Pradip Kattel, Yicheng Tang, Natan Andrei
We investigate the nonequilibrium dynamics of a one-dimensional interacting system across a transition from a charge-density-wave (CDW) phase to a symmetry-protected topological (S…
Isospectrality and Operator Complexity
Pradip Kattel, Yicheng Tang, Natan Andrei
We study a pair of exactly solvable, isospectral fermion chains, one strongly interacting and one quadratic, that nevertheless display remarkably different phase structures and ope…
A mean-field description of strong-to-weak symmetry breaking in the monitored three-dimensional Bose-Hubbard model
Yicheng Tang, Pradip Kattel, J. H. Pixley
Strong-to-weak spontaneous symmetry breaking has emerged as a novel form of ordering in monitored and open quantum systems, yet its characterization has so far primarily relied on…