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Loss-induced collective mode in one-dimensional Bose gases

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2024

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Rosso, Lorenzo
Mazza, Leonardo
Biella, Alberto

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Physical Review A. American Physical Society (APS). 2024, 110(4), 043315. ISSN 2469-9926. eISSN 2469-9934. Verfügbar unter: doi: 10.1103/physreva.110.043315

Zusammenfassung

We show that two-body losses induce a collective excitation in a harmonically trapped one-dimensional Bose gas, even in the absence of a quench in the trap or any other external perturbation. Focusing on the dissipatively fermionized regime, we perform an exact mode expansion of the rapidity distribution function and characterize the emergence of the collective motion. We find clear coherent oscillations in the widths of the gas both in position and rapidity space as well as in the phase-space quadrupole mode of the gas. We compare this motion to that of the well-known breathing mode in the absence of losses and find that they differ in the motion of the density profile. We also discuss the role of losses in the collective motion of the gas following various other protocols, such as the removal of losses after a finite hold time, and when the harmonic trap is also quenched.

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ISO 690MAKI, Jeffrey, Lorenzo ROSSO, Leonardo MAZZA, Alberto BIELLA, 2024. Loss-induced collective mode in one-dimensional Bose gases. In: Physical Review A. American Physical Society (APS). 2024, 110(4), 043315. ISSN 2469-9926. eISSN 2469-9934. Verfügbar unter: doi: 10.1103/physreva.110.043315
BibTex
@article{Maki2024-10-15Lossi-71796,
  year={2024},
  doi={10.1103/physreva.110.043315},
  title={Loss-induced collective mode in one-dimensional Bose gases},
  number={4},
  volume={110},
  issn={2469-9926},
  journal={Physical Review A},
  author={Maki, Jeffrey and Rosso, Lorenzo and Mazza, Leonardo and Biella, Alberto},
  note={Article Number: 043315}
}
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