Ergodicity breaking arising from Hilbert space fragmentation in dipole-conserving Hamiltonians

P Sala, T Rakovszky, R Verresen, M Knap, F Pollmann - Physical Review X, 2020 - APS
We show that the combination of charge and dipole conservation—characteristic of fracton
systems—leads to an extensive fragmentation of the Hilbert space, which, in turn, can lead …

Thermalization and its absence within Krylov subspaces of a constrained Hamiltonian

S Moudgalya, A Prem, R Nandkishore… - Memorial Volume for …, 2022 - World Scientific
We study the quantum dynamics of a simple translation invariant, center-of-mass (CoM)
preserving model of interacting fermions in one dimension (1D), which arises in multiple …

Quantum many-body scars in a Landau level on a thin torus

S Moudgalya, BA Bernevig, N Regnault - Physical Review B, 2020 - APS
We study a kinetically constrained pair-hop** model that arises within a Landau level in
the quantum Hall effect. At filling ν= 1/3, the model exactly maps onto the so-called “PXP …

Hydrodynamics in long-range interacting systems with center-of-mass conservation

A Morningstar, N O'Dea, J Richter - Physical Review B, 2023 - APS
In systems with a conserved density, the additional conservation of the center of mass
(dipole moment) has been shown to slow down the associated hydrodynamics. At the same …

Composite fermions on a torus

S Pu, YH Wu, JK Jain - Physical Review B, 2017 - APS
We achieve an explicit construction of the lowest Landau level (LLL) projected wave
functions for composite fermions in the periodic (torus) geometry. To this end, we first …

Jain-2/5 parent Hamiltonian: Structure of zero modes, dominance patterns, and zero mode generators

L Chen, S Bandyopadhyay, A Seidel - Physical Review B, 2017 - APS
We analyze general zero mode properties of the parent Hamiltonian of the unprojected Jain-
2/5 state. We characterize the zero mode condition associated to this Hamiltonian via …

Deformed Fredkin model for the Moore-Read state on thin cylinders

C Voinea, S Pu, A Kirmani, P Ghaemi, A Rahmani… - Physical Review …, 2024 - APS
We propose a frustration-free model for the Moore-Read quantum Hall state on sufficiently
thin cylinders with circumferences≲ 7 magnetic lengths. While the Moore-Read Hamiltonian …

Solvable models for unitary and nonunitary topological phases

Z Papić - Physical Review B, 2014 - APS
We introduce a broad class of simple models for quantum Hall states based on the
expansion of their parent Hamiltonians near the one-dimensional limit of “thin cylinders,” ie …

Exact solution of the minimalist Stark many-body localization problem in terms of spin-pair hop**

AL Burin - Physical Review B, 2022 - APS
Simultaneous conservation of charge (spin projection to the z axis) and dipole moment can
partially suppress ergodicity (thermalization) by means of shattering the phase space. This …

Universal Freezing Transitions of Dipole-Conserving Chains

J Classen-Howes, R Senese, A Prakash - arxiv preprint arxiv:2408.10321, 2024 - arxiv.org
We argue for the existence of a universal phase diagram of $ k $-local quantum chains
subject to the conservation of a total charge and its dipole moment, which exhibits" freezing" …