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Coalescing hardcore-boson condensate states with nonzero momentum
by C. H. Zhang, Z. Song
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | C.H. Zhang |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2404.13297v3 (pdf) |
| Date accepted: | 2024-12-10 |
| Date submitted: | 2024-11-27 15:05 |
| Submitted by: | Zhang, C.H. |
| Submitted to: | SciPost Physics Core |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approaches: | Theoretical, Computational |
Abstract
Exceptional points (EPs), as an exclusive feature of a non-Hermitian system, support coalescing states to be alternative stable state beyond the ground state. In this work, we explore the influence of non-Hermitian impurities on the dynamic formation of condensate states in one-, two-, and three-dimensional extended Bose-Hubbard systems with strong on-site interaction. Based on the solution for the hardcore limit, we show exactly that condensate modes with off-diagonal long-range order (ODLRO) can exist when certain system parameters satisfy specific matching conditions. Under open boundary conditions, the condensate states become coalescing states when the non-Hermitian PT-symmetric boundary gives rise to the EPs. The fundamental mechanism behind this phenomenon is uncovered through analyzing the scattering dynamics of many-particle wavepackets at the non-Hermitian boundaries. The EP dynamics facilitate the dynamic generation of condensate states with non-zero momentum. To further substantiate the theoretical findings, numerical simulations are conducted. This study not only unveils the potential condensation of interacting bosons but also offers an approach for the engineering of condensate states.
Author comments upon resubmission
Thank you for your letter and for the referee’s comments concerning our manuscript entitled "Coalescing hardcore-boson condensate states with nonzero momentum". In the report, the referee and editor precisely assessed our revised vision and suggest more discussions for the numerical results in Figures 1 and 2. We have studied these comments carefully and made corrections. In an effort to meet your approval, we have expanded the discussion of our numerical result in Figures 1 and 2 and corrected some mistakes in detail.
Yours sincerely,
C. H. Zhang, Z. Song
List of changes
Considering the referee’s suggestions, we have revised our paper. The changes are listed below:
1. More detailed discussions of the numerical results in Figs. 1 and 2 have been added.
2. The conclusion of the result in Fig. 2 has been added in caption.
3. DOIs have been added in Refs. [44-46].
4. Some mistakes in detail have been corrected.
Published as SciPost Phys. Core 8, 013 (2025)
Reports on this Submission
Strengths
1- The idea of looking for ways to obtain condensates with non-zero momentum.
2- Analytical and numerical calculations
Report
The authors took my previous comments into account and improved the manuscript, the current version of which deserves publication in Scipost Physics Core.
Recommendation
Publish (meets expectations and criteria for this Journal)