Loss induced collective mode in one-dimensional Bose gases

Abstract

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.

published version (12 pages, 12 figures)

References in corpus (15)

• Strong dissipation inhibits losses and induces correlations in cold molecular gases
• Exact coherent states of a harmonically confined Tonks-Girardeau gas
• Lieb-Liniger model of a dissipation-induced Tonks-Girardeau gas
• The effect of atom losses on the distribution of rapidities in the one-dimensional Bose gas
• Perturbative approach to weakly driven many-particle systems in the presence of approximate conservation laws
• Breakdown of Tan's relation in lossy one-dimensional Bose gases
• Reaction-limited quantum reaction-diffusion dynamics
• A dynamical theory for one-dimensional fermions with strong two-body losses: universal non-Hermitian Zeno physics and spin-charge separation
• Dissipative phase transitions in $n$-photon driven quantum nonlinear resonators
• Modeling Particle Loss in Open Systems using Keldysh Path Integral and Second Order Cumulant Expansion
• Large-scale universality in quantum reaction-diffusion from Keldysh field theory
• Effects of atom losses on a one-dimensional lattice gas of hardcore bosons
• Quantum reaction-limited reaction-diffusion dynamics of annihilation processes
• Frequency beating and damping of breathing oscillations of a harmonically trapped one-dimensional quasicondensate
• Weakly interacting Bose gas with two-body losses

Cited by in corpus (7)

• Many-Body Open Quantum Systems
• Accuracy of time-dependent GGE under weak dissipation
• Fate of thermalization of ultracold fermions with two-body dissipation
• Reaction-diffusion dynamics of the weakly dissipative Fermi gas
• Kinetics of Quantum Reaction-Diffusion systems
• Space-time first-order correlations of an open Bose-Hubbard model with incoherent pump and loss
• $\mathrm{SU}(3)$ Fermi-Hubbard gas with three-body losses: symmetries and dark states