11 papers
Charge Transport Capacity as a Probe of Resonances in Models of Many-Body Localization
Jessica Kaijia Jiang, Federica Maria Surace, Olexei I. Motrunich
The fate of Many-Body Localization (MBL) in the thermodynamic limit remains elusive, partly because numerical studies suffer from unexplained finite-size effects. We introduce and…
Distinct Types of Parent Hamiltonians for Quantum States: Insights from the State as a Quantum Many-Body Scar
Lei Gioia, Sanjay Moudgalya, Olexei I. Motrunich
The construction of parent Hamiltonians that possess a given state as their ground state is a well-studied problem. In this work, we generalize this notion by considering simple qu…
Weak integrability breaking perturbations in classical integrable models on the lattice
Sara Vanovac, Catherine McCarthy, Federica Maria Surace +1
We show how to systematically construct weak integrability breaking perturbations (WIBs) for classical integrable models on the lattice. These perturbations, which allow quasi-cons…
Strong Zero Modes via Commutant Algebras
Sanjay Moudgalya, Olexei I. Motrunich
Strong Zero Modes (SZMs) are (approximately) conserved quantities that result in (approximate) double degeneracies in the entire spectra of certain Hamiltonians, with the Majorana…
Locality forces equal energy spacing of quantum many-body scar towers
Nicholas O'Dea, Lei Gioia, Sanjay Moudgalya +1
Quantum many-body scars are non-thermal eigenstates embedded in the spectra of otherwise non-integrable Hamiltonians. Paradigmatic examples often appear as quasiparticle towers of…
Quasiconservation Laws and Suppressed Transport in Weakly Interacting Localized Models
Jessica Kaijia Jiang, Federica Maria Surace, Olexei I. Motrunich
The stability of localization in the presence of interactions remains an open problem, with finite-size effects posing significant challenges to numerical studies. In this work, we…