Quantum kinetics of quenched two-dimensional Bose superfluids
- URL: http://arxiv.org/abs/2302.10737v1
- Date: Tue, 21 Feb 2023 15:39:49 GMT
- Title: Quantum kinetics of quenched two-dimensional Bose superfluids
- Authors: Cl\'ement Duval and Nicolas Cherroret
- Abstract summary: We study theoretically the non-equilibrium dynamics of a two-dimensional (2D) uniform Bose superfluid following a quantum quench.
We derive quantum kinetic equations for the low-energy phononic excitations of the system and characterize both their normal and anomalous momentum distributions.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We study theoretically the non-equilibrium dynamics of a two-dimensional (2D)
uniform Bose superfluid following a quantum quench, from its short-time
(prethermal) coherent dynamics to its long-time thermalization. Using a quantum
hydrodynamic description combined with a Keldysh field formalism, we derive
quantum kinetic equations for the low-energy phononic excitations of the system
and characterize both their normal and anomalous momentum distributions. We
apply this formalism to the interaction quench of a 2D Bose gas and study the
ensuing dynamics of its quantum structure factor and coherence function, both
recently measured experimentally. Our results indicate that in two dimensions,
a description in terms of independent quasi-particles becomes quickly
inaccurate and should be systematically questioned when dealing with
non-equilibrium scenarios.
Related papers
- Real-time dynamics of false vacuum decay [49.1574468325115]
We investigate false vacuum decay of a relativistic scalar field in the metastable minimum of an asymmetric double-well potential.
We employ the non-perturbative framework of the two-particle irreducible (2PI) quantum effective action at next-to-leading order in a large-N expansion.
arXiv Detail & Related papers (2023-10-06T12:44:48Z) - Semiclassical descriptions of dissipative dynamics of strongly interacting Bose gases in optical lattices [0.0]
We develop methods for describing real-time dynamics of dissipative Bose-Hubbard systems in a strongly interacting regime.
We numerically demonstrate that the discrete TWA approach is able to qualitatively capture the continuous quantum Zeno effect on dynamics.
arXiv Detail & Related papers (2023-07-30T08:39:06Z) - Experimental quantum simulation of non-Hermitian dynamical topological
states using stochastic Schr\"odinger equation [8.374675687855248]
Noise is ubiquitous in real quantum systems, leading to non-Hermitian quantum dynamics.
We show a feasible quantum simulation approach for dissipative quantum dynamics with Schr"odinger equation.
arXiv Detail & Related papers (2022-06-30T08:48:25Z) - Non-equilibrium quantum thermodynamics of a particle trapped in a
controllable time-varying potential [0.0]
We study the dynamics of a levitated nanoparticles undergoing the transition from an harmonic potential to a double-well.
We investigate the dynamics with the Wehrl entropy production and its rates.
The effects and the competitions of the unitary and the dissipative parts onto the system are demonstrated.
arXiv Detail & Related papers (2021-10-29T16:25:25Z) - Quantum kinetic theory of flux-carrying Brownian particles [0.0]
We develop the kinetic theory of the flux-carrying Brownian motion recently introduced in the context of open quantum systems.
This model constitutes an effective description of two-dimensional dissipative particles violating both time-reversal and parity.
arXiv Detail & Related papers (2021-10-29T09:54:53Z) - From geometry to coherent dissipative dynamics in quantum mechanics [68.8204255655161]
We work out the case of finite-level systems, for which it is shown by means of the corresponding contact master equation.
We describe quantum decays in a 2-level system as coherent and continuous processes.
arXiv Detail & Related papers (2021-07-29T18:27:38Z) - Statistical mechanics of one-dimensional quantum droplets [0.0]
We study the dynamical relaxation process of modulationally unstable one-dimensional quantum droplets.
We find that the instability leads to the spontaneous formation of quantum droplets featuring multiple collisions.
arXiv Detail & Related papers (2021-02-25T15:30:30Z) - Quantum chaos driven by long-range waveguide-mediated interactions [125.99533416395765]
We study theoretically quantum states of a pair of photons interacting with a finite periodic array of two-level atoms in a waveguide.
Our calculation reveals two-polariton eigenstates that have a highly irregular wave-function in real space.
arXiv Detail & Related papers (2020-11-24T07:06:36Z) - Bloch-Landau-Zener dynamics induced by a synthetic field in a photonic
quantum walk [52.77024349608834]
We realize a photonic quantum walk in the presence of a synthetic gauge field.
We investigate intriguing system dynamics characterized by the interplay between Bloch oscillations and Landau-Zener transitions.
arXiv Detail & Related papers (2020-11-11T16:35:41Z) - Unraveling the topology of dissipative quantum systems [58.720142291102135]
We discuss topology in dissipative quantum systems from the perspective of quantum trajectories.
We show for a broad family of translation-invariant collapse models that the set of dark state-inducing Hamiltonians imposes a nontrivial topological structure on the space of Hamiltonians.
arXiv Detail & Related papers (2020-07-12T11:26:02Z) - Theory of waveguide-QED with moving emitters [68.8204255655161]
We study a system composed by a waveguide and a moving quantum emitter in the single excitation subspace.
We first characterize single-photon scattering off a single moving quantum emitter, showing both nonreciprocal transmission and recoil-induced reduction of the quantum emitter motional energy.
arXiv Detail & Related papers (2020-03-20T12:14:10Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.