SciPost logo

SciPost Submission Page

Josephson oscillations in split one-dimensional Bose gases

by Yuri D. van Nieuwkerk, Jörg Schmiedmayer and Fabian H.L. Essler

This Submission thread is now published as

Submission summary

Authors (as registered SciPost users): Fabian Essler · Jörg Schmiedmayer · Yuri Daniel van Nieuwkerk
Submission information
Preprint Link: scipost_202011_00012v2  (pdf)
Date accepted: 2021-03-02
Date submitted: 2021-02-15 08:25
Submitted by: van Nieuwkerk, Yuri Daniel
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
Specialties:
  • Condensed Matter Physics - Theory
  • Quantum Physics
Approach: Theoretical

Abstract

We consider the non-equilibrium dynamics of a weakly interacting Bose gas tightly confined to a highly elongated double well potential. We use a self-consistent time-dependent Hartree–Fock approximation in combination with a projection of the full three-dimensional theory to several coupled one-dimensional channels. This allows us to model the time-dependent splitting and phase imprinting of a gas initially confined to a single quasi one-dimensional potential well and obtain a microscopic description of the ensuing damped Josephson oscillations.

Author comments upon resubmission

We thank the referees for their very helpful comments. We have responded to their questions and comments in a point-by-point manner in the pdf documents uploaded at the submission page.

List of changes

-Expanded details of the transverse potential in Sec. 5.1 (Eqs. 54 and 55)
-Added a comment about the reemergence of the oscillations and the relevant time scales (bottom p. 20)
-Added a comment about the time scale of the damping vs the time scale of the gases' breathing motion (top of p. 22).
-Added a comment explaining the relevance of the equations that go beyond SCHF in Sec. 7.
-Elaborated on the useful applications of our work to the modelling of the experiments using (perturbations of) a sine-Gordon model.

Published as SciPost Phys. 10, 090 (2021)


Reports on this Submission

Anonymous Report 2 on 2021-2-24 (Invited Report)

Report

I am grateful for the authors’ clarifications and find the answers to my questions, as well as the modification in the paper adequate. I therefore recommend this work for publication.

  • validity: -
  • significance: -
  • originality: -
  • clarity: -
  • formatting: -
  • grammar: -

Anonymous Report 1 on 2021-2-17 (Invited Report)

Report

I have read the resubmitted version of the manuscript, together with the authors' reply to my previous report.
I am fully satisfied with the authors' answers and changes, therefore I can recommend this paper for publication.

  • validity: -
  • significance: -
  • originality: -
  • clarity: -
  • formatting: -
  • grammar: -

Login to report or comment