The discovery of quantum many-body scars (QMBS) both in Rydberg atom simulators and in
the Affleck–Kennedy–Lieb–Tasaki spin-1 chain model, have shown that a weak violation of …

We study the phenomenon of Hilbert space fragmentation in isolated Hamiltonian and
Floquet quantum systems using the language of commutant algebras, the algebra of all …

We identify emergent hydrodynamics governing charge transport in Brownian random time
evolution with various symmetries, constraints, and ranges of interactions. This is …

Strong, non-perturbative interactions often lead to new exciting physics, as epitomized by
emergent anyons from the Fractional Quantum hall effect. Within the actively investigated …

Periodically driven closed quantum systems are expected to eventually heat up to infinite
temperature; reaching a steady state described by a circular orthogonal ensemble …

Atypical eigenstates in the form of quantum scars and fragmentation of Hilbert space due to
conservation laws provide obstructions to thermalization in the absence of disorder. In …

Isolated interacting quantum systems generally thermalize, yet there are several examples
for the breakdown of ergodicity, such as many-body localization and quantum scars …

We consider a 2D quantum spin model with ring-exchange interaction that has subsystem
symmetries associated to conserved magnetization along rows and columns of a square …

The statistics of gap ratios between consecutive energy levels is a widely used tool—in
particular, in the context of many-body physics—to distinguish between chaotic and …

In this work, based on the Fredkin spin chain, we introduce a family of spin-1/2 many-body
Hamiltonians with a three-site interaction featuring a fragmented Hilbert space with …