31 citations · 78 across the 13 of their papers we have counts for
10 papers · 1 filter
Integrability-breaking-induced Mpemba effect in spin chains
Adam J. McRoberts
We show that there are two distinct mechanisms that can cause the symmetry-restoration Mpemba effect in spin chains with \textit{weakly broken} integrability, such that the asympto…
Exact results on the hydrodynamics of certain kinetically-constrained hopping processes
Adam J. McRoberts, Vadim Oganesyan, Antonello Scardicchio
We consider a model of interacting random walkers on a triangular chain and triangular lattice, where a particle can move only if the other two sites of the triangle are unoccupied…
Transition between critical antiferromagnetic phases in the - spin chain
Adam J. McRoberts, Chris Hooley, A. G. Green
The - spin chain is one of the canonical models of quantum magnetism, and has long been known to host a critical antiferromagnetic phase with power-law decay of spin corr…
Ballistic conductance with and without disorder in a boundary-driven XXZ spin chain
Adam J. McRoberts, Roderich Moessner
Motivated by recent experiments on Google's sycamore NISQ platform on the spin transport resulting from a non-unitary periodic boundary drive of an XXZ chain, we study a classical…
Parametrically long lifetime of superdiffusion in non-integrable spin chains
Adam J. McRoberts, Roderich Moessner
Superdiffusion is surprisingly easily observed even in systems without the integrability underpinning this phenomenon. Indeed, the classical Heisenberg chain -- one of the simplest…
Domain wall dynamics in classical spin chains: free propagation, subdiffusive spreading, and soliton emission
Adam J. McRoberts, Thomas Bilitewski, Masudul Haque +1
The non-equilibrium dynamics of domain wall initial states in a classical anisotropic Heisenberg chain exhibits a striking coexistence of apparently linear and non-linear behaviour…
Subdiffusive spin transport in disordered classical Heisenberg chains
Adam J. McRoberts, Federico Balducci, Roderich Moessner +1
We study the transport and equilibration properties of a classical Heisenberg chain, whose couplings are random variables drawn from a one-parameter family of power-law distributio…
Prethermalization in periodically-driven nonreciprocal many-body spin systems
Adam J. McRoberts, Hongzheng Zhao, Roderich Moessner +1
We analyze a new class of time-periodic nonreciprocal dynamics in interacting chaotic classical spin systems, whose equations of motion are conservative (phase-space-volume-preserv…
Long-lived Solitons and Their Signatures in the Classical Heisenberg Chain
Adam J. McRoberts, Thomas Bilitewski, Masudul Haque +1
Motivated by the KPZ scaling recently observed in the classical ferromagnetic Heisenberg chain, we investigate the role of solitonic excitations in this model. We find that the Hei…
Anomalous Dynamics and Equilibration in the Classical Heisenberg Chain
Adam J. McRoberts, Thomas Bilitewski, Masudul Haque +1
The search for departures from standard hydrodynamics in many-body systems has yielded a number of promising leads, especially in low dimension. Here we study one of the simplest c…