The bulk modulus of three-dimensional quantum droplets
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866917426925404160 |
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| author | Zhao, Zibin Li, Guilong Chen, Zhaopin Luo, Huan-Bo Liu, Bin Malomed, Boris A. Li, Yongyao |
| author_facet | Zhao, Zibin Li, Guilong Chen, Zhaopin Luo, Huan-Bo Liu, Bin Malomed, Boris A. Li, Yongyao |
| contents | Quantum droplets (QDs), formed by ultradilute quantum fluids under the action of the Lee-Huang-Yang (LHY) effect, provide a unique platform for investigating a wide range of macroscopic quantum effects. Recent studies of QDs' breathing modes and collisional dynamics have revealed their compressibility and extensibility, which suggests that their elasticity parameters can be identified. In this work we derive the elastic bulk modulus (BM) of QDs by means of theoretical analysis and numerical simulations and establish a relation between the BM and the eigenfrequency of the QD's intrinsic vibrations. The analysis reveals the dependence of the QD's elasticity on the particle number and the strength of interparticle interactions. We additionally provide a realistic estimate of the bulk modulus for the system, yielding a concrete physical value that may serve as a reference for future experimental measurements. Taken together, these results also point to possibilities for realizing elastic media governed by the LHY effect. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_02394 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | The bulk modulus of three-dimensional quantum droplets Zhao, Zibin Li, Guilong Chen, Zhaopin Luo, Huan-Bo Liu, Bin Malomed, Boris A. Li, Yongyao Quantum Gases Pattern Formation and Solitons Quantum droplets (QDs), formed by ultradilute quantum fluids under the action of the Lee-Huang-Yang (LHY) effect, provide a unique platform for investigating a wide range of macroscopic quantum effects. Recent studies of QDs' breathing modes and collisional dynamics have revealed their compressibility and extensibility, which suggests that their elasticity parameters can be identified. In this work we derive the elastic bulk modulus (BM) of QDs by means of theoretical analysis and numerical simulations and establish a relation between the BM and the eigenfrequency of the QD's intrinsic vibrations. The analysis reveals the dependence of the QD's elasticity on the particle number and the strength of interparticle interactions. We additionally provide a realistic estimate of the bulk modulus for the system, yielding a concrete physical value that may serve as a reference for future experimental measurements. Taken together, these results also point to possibilities for realizing elastic media governed by the LHY effect. |
| title | The bulk modulus of three-dimensional quantum droplets |
| topic | Quantum Gases Pattern Formation and Solitons |
| url | https://arxiv.org/abs/2511.02394 |