Effective thermalization of a many-body dynamically localized Bose gas
- URL: http://arxiv.org/abs/2103.14388v2
- Date: Mon, 4 Oct 2021 18:53:26 GMT
- Title: Effective thermalization of a many-body dynamically localized Bose gas
- Authors: Vincent Vuatelet, Adam Ran\c{c}on
- Abstract summary: We show that the many-body dynamically localized phase is effectively thermal.
This is a rare example where driving and many-body (dynamical) localization lead to an effectively ergodic state.
- Score: 0.0
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Dynamical localization is the analog of Anderson localization in momentum
space, where the system's energy saturates and the single-particle
wave-functions are exponentially localized in momentum space. In the presence
of interactions, in the context of a periodically kicked Bose gas, it has been
argued that dynamical localization persists. Focusing on the Tonks (strongly
interacting) regime, we show that the many-body dynamically localized phase is
effectively thermal, a clear deviation from the breaking of ergodicity observed
in standard many-body localized systems. We relate the effective temperature to
the driving parameters, and thus quantitatively describe the loss of coherence
at large distances in this phase. Contrary to the non-interacting case, the
momentum distribution decays as a power-law at large momenta, characterized by
an effectively thermal Tan's contact. This is a rare example where driving and
many-body (dynamical) localization lead to an effectively ergodic state.
Related papers
- Enhanced many-body localization in a kinetically constrained model [0.0]
Kinetic constraints lead to long-lived metastable states depending on initial conditions.
We show that the system is highly prone to localization in the presence of uncorrelated disorder.
Our work sheds light on the intricate interplay of kinetic constraints and localization and may provide additional control over many-body localized phases in the time domain.
arXiv Detail & Related papers (2023-09-30T20:34:58Z) - Dephasing and pseudo-coherent quantum dynamics in super-Ohmic
environments [0.0]
We investigate within a spin-boson model the influence of a super-Ohmic environment on the dynamics of a quantum two-state system.
Super-Ohmic purely dephasing fluctuations strongly suppress the amplitude of coherent dynamics at very short times.
The according phase separation line shows also a non-monotonous behaviour, very similar to the pseudo-coherent dynamics.
arXiv Detail & Related papers (2023-03-31T17:11:03Z) - Entanglement and localization in long-range quadratic Lindbladians [49.1574468325115]
Signatures of localization have been observed in condensed matter and cold atomic systems.
We propose a model of one-dimensional chain of non-interacting, spinless fermions coupled to a local ensemble of baths.
We show that the steady state of the system undergoes a localization entanglement phase transition by tuning $p$ which remains stable in the presence of coherent hopping.
arXiv Detail & Related papers (2023-03-13T12:45:25Z) - Statics and Dynamics of non-Hermitian Many-Body Localization [0.0]
Many-body localized phases retain memory of their initial conditions in disordered interacting systems.
We focus on the interacting Hatano-Nelson model which breaks unitarity via asymmetric hopping.
Our findings suggest the possibility of an intermediate dynamical regime in disordered open systems.
arXiv Detail & Related papers (2023-01-04T18:58:17Z) - Dynamical many-body delocalization transition of a Tonks gas in a
quasi-periodic driving potential [0.0]
We show that a quasi-periodically kicked Tonks gas goes through a dynamical many-body delocalization transition when the kick strength is increased.
At the critical point, the momentum distribution of the Tonks gas displays different scaling at small and large momenta.
arXiv Detail & Related papers (2022-09-26T08:35:42Z) - Heat transport and cooling performance in a nanomechanical system with
local and non local interactions [68.8204255655161]
We study heat transport through a one dimensional time-dependent nanomechanical system.
The system presents different stationary transport regimes depending on the driving frequency, temperature gradients and the degree of locality of the interactions.
arXiv Detail & Related papers (2022-02-21T12:03:54Z) - Propagation of Many-body Localization in an Anderson Insulator [0.0]
Many-body localization (MBL) is an example of a dynamical phase of matter that avoids thermalization.
We consider the stability of an Anderson insulator with a finite density of particles interacting with a single mobile impurity.
arXiv Detail & Related papers (2021-09-15T14:40:25Z) - Localisation determines the optimal noise rate for quantum transport [68.8204255655161]
Localisation and the optimal dephasing rate in 1D chains are studied.
A simple power law captures the interplay between size-dependent and size-independent responses.
Relationship continues to apply at intermediate and high temperature but breaks down in the low temperature limit.
arXiv Detail & Related papers (2021-06-23T17:52:16Z) - Signatures of bath-induced quantum avalanches in a many-body--localized
system [47.187609203210705]
Quantum avalanches occur when the system is locally coupled to a small thermal inclusion that acts as a bath.
We realize an interface between a many-body--localized system and a thermal inclusion of variable size, and study its dynamics.
arXiv Detail & Related papers (2020-12-30T18:34:34Z) - Analog cosmological reheating in an ultracold Bose gas [58.720142291102135]
We quantum-simulate the reheating-like dynamics of a generic cosmological single-field model in an ultracold Bose gas.
Expanding spacetime as well as the background oscillating inflaton field are mimicked in the non-relativistic limit.
The proposed experiment has the potential of exploring the evolution up to late times even beyond the weak coupling regime.
arXiv Detail & Related papers (2020-08-05T18:00:26Z) - Cat states in a driven superfluid: role of signal shape and switching
protocol [62.997667081978825]
We investigate the behavior of a one-dimensional Bose-Hubbard model whose kinetic energy is made to oscillate with zero time-average.
We analyze the robustness of this unconventional ground state against variations of a number of system parameters.
arXiv Detail & Related papers (2020-05-11T15:15:06Z)
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.