65 citations · 287 across the 12 of their papers we have counts for
5 papers · 1 filter
Intermittency and dynamical Lee-Yang zeros of open quantum systems
James M. Hickey, Christian Flindt, Juan P. Garrahan
We use high-order cumulants to investigate the Lee-Yang zeros of generating functions of dynamical observables in open quantum systems. At long times the generating functions take…
Signatures of many-body localisation in a system without disorder and the relation to a glass transition
James M. Hickey, Sam Genway, Juan P. Garrahan
We study a quantum spin system with local bilinear interactions and without quenched disorder which seems to display characteristic signatures of a many-body localisation (MBL) tra…
Timescales, dynamical phase transitions and 3rd order phase transitions in the 1d anisotropic XY model
James M. Hickey
Recent research into time-integrated observables has revealed a special class of states which cap- ture the singular features of the generating functions of those observables, as e…
Cumulants of time-integrated observables of closed quantum systems and PT-symmetry, with an application to the quantum Ising chain
James M. Hickey, Emanuele Levi, Juan P. Garrahan
We study the connection between the cumulants of a time-integrated observable of a quantum system and the PT-symmetry properties of the non-Hermitian deformation of the Hamiltonian…
Fluctuation Theorems and the Generalised Gibbs Ensemble in Integrable Systems
James M. Hickey, Sam Genway
We derive fluctuation relations for a many-body quantum system prepared in a Generalised Gibbs Ensemble subject to a general nonequilibrium protocol. By considering isolated integr…