All Outputs (13)

Metastability in an open quantum Ising model (2016)
Journal Article

We apply a recently developed theory for metastability in open quantum systems to a one-dimensional dissipative quantum Ising model. Earlier results suggest this model features either a nonequilibrium phase transition or a smooth but sharp crossover,... Read More about Metastability in an open quantum Ising model.

Emergent kinetic constraints, ergodicity breaking, and cooperative dynamics in noisy quantum systems (2016)
Journal Article

Kinetically constrained spin systems play an important role in understanding key properties of the dynamics of slowly relaxing materials, such as glasses. Recent experimental studies have revealed that manifest kinetic constraints govern the evolutio... Read More about Emergent kinetic constraints, ergodicity breaking, and cooperative dynamics in noisy quantum systems.

Non-equilibrium fluctuations and metastability arising from non-additive interactions in dissipative multi-component Rydberg gases (2016)
Journal Article

We study the out-of-equilibrium dynamics of dissipative gases of atoms excited to two or more high-lying Rydberg states. This situation bears interesting similarities to classical binary (in general p-ary) mixtures of particles. The effective forces... Read More about Non-equilibrium fluctuations and metastability arising from non-additive interactions in dissipative multi-component Rydberg gases.

Applicability of dynamic facilitation theory to binary hard disk systems (2016)
Journal Article

We numerically investigate the applicability of dynamic facilitation (DF) theory for glass-forming binary hard disk systems where supercompression is controlled by pressure. By using novel efficient algorithms for hard disks, we are able to generate... Read More about Applicability of dynamic facilitation theory to binary hard disk systems.

Classical stochastic dynamics and continuous matrix product states: gauge transformations, conditioned and driven processes, and equivalence of trajectory ensembles (2016)
Journal Article

Borrowing ideas from open quantum systems, we describe a formalism to encode ensembles of trajectories of classical stochastic dynamics in terms of continuous matrix product states (cMPSs). We show how to define in this approach 'biased' or 'conditio... Read More about Classical stochastic dynamics and continuous matrix product states: gauge transformations, conditioned and driven processes, and equivalence of trajectory ensembles.

Front propagation versus bulk relaxation in the annealing dynamics of a kinetically constrained model of ultrastable glasses (2016)
Journal Article

Glasses prepared by physical vapour deposition have been shown to be remarkably more stable than those prepared by standard cooling protocols, with properties that appear to be similar to systems aged for extremely long times. When subjected to a rap... Read More about Front propagation versus bulk relaxation in the annealing dynamics of a kinetically constrained model of ultrastable glasses.

Towards a Theory of Metastability in Open Quantum Dynamics (2016)
Journal Article

© 2016 American Physical Society. By generalizing concepts from classical stochastic dynamics, we establish the basis for a theory of metastability in Markovian open quantum systems. Partial relaxation into long-lived metastable states - distinct fro... Read More about Towards a Theory of Metastability in Open Quantum Dynamics.

Robustness of many-body localization in the presence of dissipation (2016)
Journal Article

Many-body localization (MBL) has emerged as a novel paradigm for robust ergodicity breaking in closed quantum many-body systems. However, it is not yet clear to which extent MBL survives in the presence of dissipative processes induced by the couplin... Read More about Robustness of many-body localization in the presence of dissipation.

Signatures of many-body localisation in a system without disorder and the relation to a glass transition (2016)
Journal Article

We study a quantum spin system—adapted from a facilitated spin model for classical glasses—with local bilinear interactions and without quenched disorder which seems to display characteristic signatures of a many-body localisation (MBL) transition. F... Read More about Signatures of many-body localisation in a system without disorder and the relation to a glass transition.

Experimental observation of controllable kinetic constraints in a cold atomic gas (2016)
Journal Article

Many-body systems relaxing to equilibrium can exhibit complex dynamics even if their steady state is trivial. In situations where relaxation requires highly constrained local particle rearrangements, such as in glassy systems, this dynamics can be di... Read More about Experimental observation of controllable kinetic constraints in a cold atomic gas.

Emergence of cooperative dynamics in fully packed classical dimers (2016)
Journal Article

We study the behavior of classical dimer coverings of the square lattice—a paradigmatic model for systems subject to constraints—evolving under local stochastic dynamics, by means of Monte Carlo simulations and theoretical arguments. We observe clear... Read More about Emergence of cooperative dynamics in fully packed classical dimers.

Dynamical phase transitions as a resource for quantum enhanced metrology (2016)
Journal Article

We consider the general problem of estimating an unknown control parameter of an open quantum system. We establish a direct relation between the evolution of both system and environment and the precision with which the parameter can be estimated. We... Read More about Dynamical phase transitions as a resource for quantum enhanced metrology.

Phase transition for quenched coupled replicas in a plaquette spin model of glasses (2016)
Journal Article

We study a three-dimensional plaquette spin model whose low temperature dynamics is glassy, due to localized defects and effective kinetic constraints. The thermodynamics of this system is smooth at all temperatures. We show that coupling it to a sec... Read More about Phase transition for quenched coupled replicas in a plaquette spin model of glasses.