49 citations · 420 across the 22 of their papers we have counts for
10 papers · 1 filter
Multipole groups and fracton phenomena on arbitrary crystalline lattices
Daniel Bulmash, Oliver Hart, Rahul Nandkishore
Multipole symmetries are of interest in multiple contexts, from the study of fracton phases, to nonergodic quantum dynamics, to the exploration of new hydrodynamic universality cla…
Extracting spinon self-energies from two-dimensional coherent spectroscopy
Oliver Hart, Rahul Nandkishore
Two-dimensional coherent spectroscopy (2DCS) is a nonlinear spectroscopy technique capable of identifying whether apparent continua in linear response are made out of multiplets of…
Fracton magnetohydrodynamics
Marvin Qi, Oliver Hart, Aaron J. Friedman +2
We extend recent work on hydrodynamics with global multipolar symmetries -- known as "fracton hydrodynamics" -- to systems in which the multipolar symmetries are gauged. We refer t…
Spectroscopic fingerprints of gapless type-II fracton phases
Oliver Hart, Rahul Nandkishore
Fracton phases feature elementary excitations with fractionalized mobility and are exciting interest from multiple areas of theoretical physics. However, the most exotic 'type-II'…
Logarithmic entanglement growth from disorder-free localization in the two-leg compass ladder
Oliver Hart, Sarang Gopalakrishnan, Claudio Castelnovo
We explore the finite-temperature dynamics of the quasi-1D orbital compass and plaquette Ising models. We map these systems onto a model of free fermions coupled to strictly locali…
From compact localized states to many-body scars in the random quantum comb
Oliver Hart, Giuseppe De Tomasi, Claudio Castelnovo
In this work we investigate the effects of configurational disorder on the eigenstates and dynamical properties of a tight-binding model on a quasi-one-dimensional comb lattice, co…
Coherent propagation of quasiparticles in topological spin liquids at finite temperature
Oliver Hart, Yuan Wan, Claudio Castelnovo
The appearance of quasiparticle excitations with fractional statistics is a remarkable defining trait of topologically ordered systems. In this work, we investigate the experimenta…
Long-range Coulomb interactions and nonhydrodynamic behavior in thermal quenches in spin ice
Oliver Hart, Marianne Haroche, Claudio Castelnovo
When spin ice systems undergo a sudden thermal quench, they have been shown to enter long-lived metastable states where the monopole excitations form so-called noncontractible pair…
Steady-state superconductivity in electronic materials with repulsive interactions
Oliver Hart, Garry Goldstein, Claudio Chamon +1
We study the effect of laser driving on a minimal model for a hexagonal two-dimensional material with broken inversion symmetry. Through the application of circularly polarised lig…
Entanglement negativity and sudden death in the toric code at finite temperature
Oliver Hart, Claudio Castelnovo
We study the fate of quantum correlations at finite temperature in the two-dimensional toric code using the logarithmic entanglement negativity. We are able to obtain exact results…