Loss induced collective mode in one-dimensional Bose gases
Fuente:
arXiv
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916497650089984 |
|---|---|
| author | Maki, Jeff Rosso, Lorenzo Mazza, Leonardo Biella, Alberto |
| author_facet | Maki, Jeff Rosso, Lorenzo Mazza, Leonardo Biella, Alberto |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_05824 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Loss induced collective mode in one-dimensional Bose gases Maki, Jeff Rosso, Lorenzo Mazza, Leonardo Biella, Alberto Quantum Gases Quantum Physics 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. |
| title | Loss induced collective mode in one-dimensional Bose gases |
| topic | Quantum Gases Quantum Physics |
| url | https://arxiv.org/abs/2402.05824 |