52 citations · 212 across the 7 of their papers we have counts for
18 papers
Fock-space anatomy of eigenstates across the many-body localisation transition
Sthitadhi Roy, David E. Logan
We explore the Fock-space structure of eigenstates across the many-body localisation (MBL) transition in a disordered, interacting quantum spin-1/2 chain. Eigenstate expectation va…
Localisation in quasiperiodic chains: a theory based on convergence of local propagators
Alexander Duthie, Sthitadhi Roy, David E. Logan
Quasiperiodic systems serve as fertile ground for studying localisation, due to their propensity already in one dimension to exhibit rich phase diagrams with mobility edges. The de…
How periodic driving stabilises and destabilises Anderson localisation on random trees
Sthitadhi Roy, Roderich Moessner, Achilleas Lazarides
Motivated by the link between Anderson localisation on high-dimensional graphs and many-body localisation, we study the effect of periodic driving on Anderson localisation on rando…
Self-consistent theory of mobility edges in quasiperiodic chains
Alexander Duthie, Sthitadhi Roy, David E. Logan
We introduce a self-consistent theory of mobility edges in nearest-neighbour tight-binding chains with quasiperiodic potentials. Demarcating boundaries between localised and extend…
Measurement and entanglement phase transitions in all-to-all quantum circuits, on quantum trees, and in Landau-Ginsburg theory
Adam Nahum, Sthitadhi Roy, Brian Skinner +1
A quantum many-body system whose dynamics includes local measurements at a nonzero rate can be in distinct dynamical phases, with differing entanglement properties. We introduce th…
Localisation on certain graphs with strongly correlated disorder
Sthitadhi Roy, David E. Logan
Many-body localisation in interacting quantum systems can be cast as a disordered hopping problem on the underlying Fock-space graph. A crucial feature of the effective Fock-space…