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Nonequilibrium phases of ultracold bosons with cavity-induced dynamic gauge fields

by Arkadiusz Kosior, Helmut Ritsch, Farokh Mivehvar

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Submission summary

Authors (as registered SciPost users): Arkadiusz Kosior
Submission information
Preprint Link: scipost_202212_00025v1  (pdf)
Date accepted: 2023-05-30
Date submitted: 2022-12-14 11:41
Submitted by: Kosior, Arkadiusz
Submitted to: SciPost Physics
Ontological classification
Academic field: Physics
  • Atomic, Molecular and Optical Physics - Theory
  • Condensed Matter Physics - Computational
  • Quantum Physics
Approach: Theoretical


Gauge fields are a central concept in fundamental theories of physics, and responsible for mediating long-range interactions between elementary particles. Recently, it has been proposed that dynamical gauge fields can be naturally engineered by photons in composite, neutral quantum gas--cavity systems using suitable atom-photon interactions. Here we comprehensively investigate nonequilibrium dynamical phases appearing in a two-leg bosonic lattice model with leg-dependent, dynamical complex tunnelings mediated by cavity-assisted two-photon Raman processes. The system constitutes a minimal dynamical flux-lattice model. We study fixed points of the equations of motion and their stability, the resultant dynamical phase diagram, and the corresponding phase transitions and bifurcations. Notably, the phase diagram features a plethora of nonequilibrium dynamical phases including limit-cycle and chaotic phases. In the end, we relate regular periodic dynamics (i.e., limit-cycle phases) of the system to time crystals.

Published as SciPost Phys. 15, 046 (2023)

Author comments upon resubmission

Dear Editors,

thank you for forwarding the Referees' reports and your friendly recommendation for a minor revision of our work. We also thank the Referees for the time and effort to provide a thorough assessment of our work. We are glad about their overall positive assessment and consider their comments very helpful to improve the presentation of our work.

We consider the points raised by the Referees fair and to the point, which helped us to enrich our article, making it more self-contained and accessible for a wider audience.

We would like to thank you for your time and consideration.

Yours sincerely,
Arkadiusz Kosior, Helmut Ritsch, Farokh Mivehvar

List of changes

1. In the new version we now added new results exhibiting the effect of both inter- and intra- species atomic interactions in our model and in particular show the validity of a single quasi-momentum approximation.
2. We expanded discussions as suggested by the Referees, see the Replies for details.
3. We updated the reference list and fixed some minor points.

Reports on this Submission

Anonymous Report 1 on 2023-2-24 (Invited Report)


The authors have answered all my questions and made most of the modifications I requested. I have no further comments and I agree with the manuscript publication.

  • validity: high
  • significance: high
  • originality: good
  • clarity: high
  • formatting: excellent
  • grammar: excellent

Author:  Arkadiusz Kosior  on 2023-05-04  [id 3642]

(in reply to Report 1 on 2023-02-24)

We would like to express our sincere gratitude to the Referee for taking the time and effort to review our manuscript. We are pleased to hear that we were able to address all of the Referee's concerns and appreciate their positive recommendation for the publication of our work.

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