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Spin rotons and supersolids in binary antidipolar condensates

by W. Kirkby, T. Bland, F. Ferlaino, R. N. Bisset

This Submission thread is now published as

Submission summary

Authors (as registered SciPost users): Russell Bisset · Thomas Bland · Wyatt Kirkby
Submission information
Preprint Link:  (pdf)
Date accepted: 2023-11-08
Date submitted: 2023-09-07 10:37
Submitted by: Kirkby, Wyatt
Submitted to: SciPost Physics Core
Ontological classification
Academic field: Physics
  • Atomic, Molecular and Optical Physics - Theory
  • Condensed Matter Physics - Theory
  • Condensed Matter Physics - Computational
Approaches: Theoretical, Computational


We present a theoretical study of a mixture of antidipolar and nondipolar Bose-Einstein condensates confined to an infinite tube. We predict the presence of a spin roton and its associated instability, which triggers a continuous unmodulated--to--supersolid phase transition. We characterize the phase diagram of the binary system, ranging from the quasi-1D to the radial Thomas-Fermi (elongated 3D) regimes. We also present the dynamic formation of supersolids following a quench from the uniform miscible phase, which maintains phase coherence across the system.

Author comments upon resubmission

We thank both referees for their useful suggestions, which we have addressed and implemented.

List of changes

List of changes:
- Abstract modified to better highlight important features of our work
- Included stronger motivational statements in the introduction, highlighting the open questions that we answer
- Section 3: Improved explanation of physical interpretation of the roton instability
- Section 4.1: Refined discussion of superfluid fractions, and their relation to the reduction of combined moment of inertia
- Section 4.2: clarified and extended the discussion on the miscible to SS-SS transition, including a physical explanation for the behaviour of the phase boundary
- Additions to conclusions, including references to specific physical experimental candidate systems and including a clarified comment on the possibility of future studies of Kibble-Zurek mechanism in supersolids
- Minor numerical artifacts for a couple of data points in Fig. 5 have been corrected. Vast majority of data points unchanged and conclusions unaffected.

Published as SciPost Phys. Core 6, 084 (2023)

Reports on this Submission

Report 1 by Koushik Mukherjee on 2023-9-11 (Invited Report)


I am happy with the changes made by the authors, and they addressed the queries properly. The manuscript provides significant new results. I recommend publishing the article in its present form in SciPost Physics Core.

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