Ultrawide dark solitons and droplet-soliton coexistence in a dipolar Bose gas with strong contact interactions
| Autor: | Kopyciński, Jakub, Łebek, Maciej, Górecki, Wojciech, Pawłowski, Krzysztof |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.130.043401 |
| Popis: | We look into dark solitons in a quasi-1D dipolar Bose gas and in a quantum droplet. We derive the analytical solitonic solution of a Gross-Pitaevskii-like equation accounting for beyond mean-field effects. The results show there is a certain critical value of the dipolar interactions, for which the width of a motionless soliton diverges. Moreover, there is a peculiar solution of the motionless soliton with a non-zero density minimum. We also present the energy spectrum of these solitons with an additional excitation subbranch appearing. Finally, we perform a series of numerical experiments revealing the coexistence of a dark soliton inside a quantum droplet. Comment: 6+4 pages, 4+1 figures |
| Databáze: | arXiv |
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