Search Results - "Hickey, James M."

Dynamical phase transitions, time-integrated observables, and geometry of states by Hickey, James M., Genway, Sam, Garrahan, Juan P.

“…We show that there exist dynamical phase transitions (DPTs), as defined by Heyl et al. [Phys. Rev. Lett. 110, 135704 (2013)…”
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Time-integrated observables as order parameters for full counting statistics transitions in closed quantum systems by Hickey, James M., Genway, Sam, Lesanovsky, Igor, Garrahan, Juan P.

“…The dynamical behavior of many-body systems is often richer than what can be anticipated from their static properties. Here we show that in closed quantum…”
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Intermittency and dynamical Lee-Yang zeros of open quantum systems by Hickey, James M, Flindt, Christian, Garrahan, Juan P

“…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…”
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Fluctuation theorems and the generalized Gibbs ensemble in integrable systems by Hickey, James M, Genway, Sam

“…We derive fluctuation relations for a many-body quantum system prepared in a generalized Gibbs ensemble subject to a general nonequilibrium protocol. By…”
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Trajectory phase transitions and dynamical Lee-Yang zeros of the Glauber-Ising chain by Hickey, James M, Flindt, Christian, Garrahan, Juan P

“…We examine the generating function of the time-integrated energy for the one-dimensional Glauber-Ising model. At long times, the generating function takes on a…”
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The Role of Correctional Officers in Multidisciplinary Mental Health Care in Prisons by Appelbaum, Kenneth L., Hickey, James M., Packer, Ira

“…Prisons have become the homes of thousands of inmates who have mental disorders. The stress of incarceration can cause morbidity among these individuals,…”
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Cumulants of time-integrated observables of closed quantum systems and PT symmetry with an application to the quantum Ising chain by Hickey, James M., Levi, Emanuele, Garrahan, Juan P.

“…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…”
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Thermodynamics of quadrature trajectories in open quantum systems by Hickey, James M., Genway, Sam, Lesanovsky, Igor, Garrahan, Juan P.

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Thermodynamic approach to generating functions and nonequilibrium dynamics by Hickey, James M

“…This thesis investigates the dynamical properties of equilibrium and nonequilibrium systems, both quantum and classical, under the guise of a thermodynamic…”
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Fairness by Explicability and Adversarial SHAP Learning by Hickey, James M, Di Stefano, Pietro G, Vasileiou, Vlasios

“…The ability to understand and trust the fairness of model predictions, particularly when considering the outcomes of unprivileged groups, is critical to the…”
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Counterfactual fairness: removing direct effects through regularization by Di Stefano, Pietro G, Hickey, James M, Vasileiou, Vlasios

“…Building machine learning models that are fair with respect to an unprivileged group is a topical problem. Modern fairness-aware algorithms often ignore causal…”
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Timescales, dynamical phase transitions and 3rd order phase transitions in the 1d anisotropic XY model by Hickey, James M

“…Recent research into time-integrated observables has revealed a special class of states which cap- ture the singular features of the generating functions of…”
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Metrics and methods for a systematic comparison of fairness-aware machine learning algorithms by Jones, Gareth P, Hickey, James M, Di Stefano, Pietro G, Dhanjal, Charanpal, Stoddart, Laura C, Vasileiou, Vlasios

“…Understanding and removing bias from the decisions made by machine learning models is essential to avoid discrimination against unprivileged groups. Despite…”
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Fluctuation Theorems and the Generalised Gibbs Ensemble in Integrable Systems by Hickey, James M, Genway, Sam

“…Phys. Rev. E 90, 022107 (2014) We derive fluctuation relations for a many-body quantum system prepared in a Generalised Gibbs Ensemble subject to a general…”
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Signatures of many-body localisation in a system without disorder and the relation to a glass transition by Hickey, James M, Genway, Sam, Garrahan, Juan P

“…Journal of Statistical Mechanics: Theory and Experiment 054047, (2016) We study a quantum spin system with local bilinear interactions and without quenched…”
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Intermittency and dynamical Lee-Yang zeros of open quantum systems by Hickey, James M, Flindt, Christian, Garrahan, Juan P

“…Phys. Rev. E 90, 062128 (2014) We use high-order cumulants to investigate the Lee-Yang zeros of generating functions of dynamical observables in open quantum…”
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Cumulants of time-integrated observables of closed quantum systems and PT-symmetry, with an application to the quantum Ising chain by Hickey, James M, Levi, Emanuele, Garrahan, Juan P

“…Phys. Rev. B 90, 094301 (2014) We study the connection between the cumulants of a time-integrated observable of a quantum system and the PT-symmetry properties…”
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Dynamical phase transitions, time-integrated observables and geometry of states by Hickey, James M, Genway, Sam, Garrahan, Juan P

“…Phys. Rev. B 89, 054301 (2014) We show that there exist dynamical phase transitions (DPTs), as defined in [Phys. Rev. Lett. 110 135704 (2013)], in the…”
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Trajectory phase transitions and dynamical Lee-Yang zeros of the Glauber-Ising chain by Hickey, James M, Flindt, Christian, Garrahan, Juan P

“…Phys. Rev. E. 88, 012119 (2013) We examine the generating function of the time-integrated energy for the one-dimensional Glauber-Ising model. At long times,…”
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Time-integrated observables as order parameters for dynamical phase transitions in closed quantum systems by Hickey, James M, Genway, Sam, Lesanovsky, Igor, Garrahan, Juan P

“…Phys. Rev. B 87, 184303 (2013) The dynamical behaviour of many-body systems is often richer than what can be anticipated from their static properties. Here we…”
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