Thermalization of a quantum Newton's cradle in a one-dimensional quasicondensate
arXiv:1811.01585 · doi:10.1103/PhysRevA.103.023315
Abstract
We study the nonequilibrium dynamics of the quantum Newton's cradle in a one-dimensional (1D) Bose gas in the weakly-interacting quasicondensate regime. This is the opposite regime to the original quantum Newton's cradle experiment of Kinoshita et al. [Nature 440, 900 (2006)], which was realized in the strongly interacting 1D Bose gas. Using finite temperature c-field methods, we calculate the characteristic relaxation rates to the final equilibrium state. Hence, we identify the different dynamical regimes of the system in the parameter space that characterizes the strength of interatomic interactions, the initial temperature, and the magnitude of the Bragg momentum used to initiate the collisional oscillations of the cradle. In all parameter regimes, we find that the system relaxes to a final equilibrium state for which the momentum distribution is consistent with a thermal distribution. For sufficiently large initial Bragg momentum, the system can undergo hundreds of repeated collisional oscillations before reaching the final thermal equilibrium. The corresponding thermalization timescales can reach tens of seconds, which is an order of magnitude smaller than in the strongly interacting regime.
arXiv commentFinal published version; 14 pages, 10 figures
References in corpus (44)
- Thermalization and its mechanism for generic isolated quantum systems
- Nonequilibrium dynamics of closed interacting quantum systems
- Atomic Scattering in Presence of an External Confinement and a Gas of Impenetrable Bosons
- Relaxation in a Completely Integrable Many-Body Quantum System: An Ab Initio Study of the Dynamics of the Highly Excited States of Lattice Hard-Core Bosons
- Quantum many-body systems out of equilibrium
- Relaxation and Pre-thermalization in an Isolated Quantum System
- Equilibration, thermalisation, and the emergence of statistical mechanics in closed quantum systems
- Non-equilibrium coherence dynamics in one-dimensional Bose gases
- Regimes of quantum degeneracy in trapped 1D gases
- Effective wave-equations for the dynamics of cigar-shaped and disc-shaped Bose condensates
- Experimental Observation of a Generalized Gibbs Ensemble
- Breakdown of thermalization in finite one-dimensional systems
- Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques
- Prethermalization
- Generalized HydroDynamics on an Atom Chip
- Generalized Gibbs ensemble prediction of prethermalization plateaus and their relation to nonthermal steady states in integrable systems
- Pair correlations in a finite-temperature 1D Bose gas
- Constructing the generalized Gibbs ensemble after a quantum quench
- Simulations of Bose fields at finite temperature
- Sub-Poissonian fluctuations in a 1D Bose gas: from the quantum quasi-condensate to the strongly interacting regime
- Fermi-Bose mapping for one-dimensional Bose gases
- The dynamics and prethermalization of one dimensional quantum systems probed through the full distributions of quantum noise
- Full quantum distribution of contrast in interference experiments between interacting one dimensional Bose liquids
- Finite temperature correlations and density profiles of an inhomogeneous interacting 1D Bose gas
- Breakdown of time-dependent mean-field theory for a one-dimensional condensate of impenetrable bosons
- Breakdown of integrability in a quasi-one-dimensional ultracold bosonic gas
- Glimmers of a Quantum KAM Theorem: Insights from Quantum Quenches in One Dimensional Bose Gases
- High efficiency symmetric beam splitter for cold atoms with a standing wave light pulse sequence
- Quench-induced breathing mode of one-dimensional Bose gases
- Thermalisation of a trapped one-dimensional Bose gas via diffusion
- Nonequilibrium dynamics of one-dimensional hard-core anyons following a quench: Complete relaxation of one-body observables
- Prethermalization Revealed by the Relaxation Dynamics of Full Distribution Functions
- Non-local pair correlations in the 1D Bose gas at finite temperature
- Spatial nonlocal pair correlations in a repulsive 1D Bose gas
- Thermalization in a quasi-1D ultracold bosonic gas
- Separation of Timescales in a Quantum Newton's Cradle
- Coherence properties of a continuous atom laser
- Two-body momentum correlations in a weakly interacting one-dimensional Bose gas
- Finite-temperature hydrodynamics for one-dimensional Bose gases: Breathing mode oscillations as a case study
- Exact nonequilibrium dynamics of finite-temperature Tonks-Girardeau gases
- Relaxation of Bosons in One Dimension and the Onset of Dimensional Crossover
- Dephasing in coherently-split quasicondensates
- Probing quasi-integrability of the Gross-Pitaevskii equation in a harmonic-oscillator potential
- Integrability breakdown in longitudinaly trapped, one-dimensional bosonic gases
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- Analytic thermodynamic properties of the Lieb-Liniger gas
- Geometric squeezing of rotating quantum gases into the lowest Landau level
- Obstruction to ergodicity in nonlinear Schrödinger equations with resonant potentials
- Dynamics of thermalization of two tunnel-coupled one-dimensional quasicondensates
- Quantum chaos in interacting Bose-Bose mixtures
- Benchmarks of Generalized Hydrodynamics for 1D Bose Gases
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- Emergent Infrared Conformal Dynamics in Strongly Interacting Quantum Gases
- The Theory of Generalised Hydrodynamics for the One-dimensional Bose Gas
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