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Fermionization of a Few-Body Bose System Immersed into a Bose-Einstein Condensate
by Tim Keller, Thomás Fogarty, Thomas Busch
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Submission summary
| Authors (as registered SciPost users): | Thomas Fogarty · Tim Keller |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2302.01743v3 (pdf) |
| Date submitted: | 2023-06-01 10:31 |
| Submitted by: | Keller, Tim |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Computational |
Abstract
We study the recently introduced self-pinning transition [Phys. Rev. Lett. 128, 053401 (2022)] in a quasi-one-dimensional two-component quantum gas in the case where the component immersed into the Bose-Einstein condensate has a finite intraspecies interaction strength. As a result of the matter-wave backaction, the fermionization in the limit of infinite intraspecies repulsion occurs via a first-order phase transition to the self-pinned state, which is in contrast to the asymptotic behavior in static trapping potentials. The system also exhibits an additional superfluid state for the immersed component if the interspecies interaction is able to overcome the intraspecies repulsion. We approximate the superfluid state in an analytical model and derive an expression for the phase transition line that coincides with well-known phase separation criteria in binary Bose systems. The full phase diagram of the system is mapped out numerically for the case of two and three atoms in the immersed component.
Author comments upon resubmission
As stated in the latest reply to the referee report, we have again revised the manuscript to address the remaining points raised by the referee.
We hope that these changes together with our responses to the report adequately answer the remaining questions.
Sincerely,
Tim Keller (on behalf of the authors)
List of changes
- rephrased the introduction of the units in the model section
- added comment about the condensate fraction to the definition of the coherence
- added sentence about the possibility of using periodic boundary conditions to the conclusion