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Additional quantum many-body scars of the spin- model with Fock-space cages and commutant algebras
Sashikanta Mohapatra, Sanjay Moudgalya, Ajit C. Balram
Quantum many-body scars (QMBS) represent a mechanism for weak ergodicity breaking, characterized by the coexistence of atypical non-thermal eigenstates within an otherwise thermali…
Exact volume-law entangled zero-energy eigenstates in a large class of spin models
Sashikanta Mohapatra, Sanjay Moudgalya, Ajit C. Balram
Exact solutions for excited states in non-integrable quantum Hamiltonians have revealed novel dynamical phenomena that can occur in quantum many-body systems. This work proposes a…
Filling constraints on translation invariant dipole conserving systems
Fiona J. Burnell, Sanjay Moudgalya, Abhinav Prem
Systems with conserved dipole moment have drawn considerable interest in light of their realization in recent experiments on tilted optical lattices. An important question for such…
Asymptotic Quantum Many-Body Scars
Lorenzo Gotta, Sanjay Moudgalya, Leonardo Mazza
We consider a quantum lattice spin model featuring exact quasiparticle towers of eigenstates with low entanglement at finite size, known as quantum many-body scars (QMBS). We show…
Numerical Methods for Detecting Symmetries and Commutant Algebras
Sanjay Moudgalya, Olexei I. Motrunich
For families of Hamiltonians defined by parts that are local, the most general definition of a symmetry algebra is the commutant algebra, i.e., the algebra of operators that commut…
Exhaustive Characterization of Quantum Many-Body Scars using Commutant Algebras
Sanjay Moudgalya, Olexei I. Motrunich
We study Quantum Many-Body Scars (QMBS) in the language of commutant algebras, which are defined as symmetry algebras of families of local Hamiltonians. This framework explains the…