Decay of Bogoliubov quasiparticles in a nonideal one-dimensional Bose gas
arXiv:1312.5322 · doi:10.1103/PhysRevB.89.180507
Abstract
We study the relaxation of excitations in a system of one-dimensional weakly interacting bosons. Due to residual weak interactions, Bogoliubov quasiparticles in this system have finite lifetimes. As a result of the conservation laws in one dimension, at zero temperature the leading mechanism of decay of a quasiparticle is disintegration into three others. We focus on phonon quasiparticles and find that their decay rate is proportional to the seventh power of momentum. In the integrable case of contact interaction between the bosons, the decay rate vanishes.
four pages, one figure
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Cited by in corpus (16)
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- Violation of the Wiedemann-Franz Law for ultracold atomic gases
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- Anomalous frequency shifts in a one-dimensional trapped Bose gas
- Viscous Dissipation in One-Dimensional Quantum Liquids
- Kinetic Theory for Interacting Luttinger Liquids
- Fate of classical solitons in one-dimensional quantum systems
- Equilibration in a chiral Luttinger liquid
- Relaxation of phonons in the Lieb-Liniger gas by dynamical refermionization
- Phonon decay in 1D atomic Bose quasicondensates via Beliaev-Landau damping
- Pulse propagation in interacting one dimensional Bose liquid
- Quasiparticle decay in a one-dimensional Bose-Fermi mixture
- Viscous Flow in a 1D Spin-Polarized Fermi Gas: the Role of Integrability on Viscosity
- Long lifetimes of ultra-hot particles in interacting Fermi systems
- Damping of elementary excitations in one-dimensional dipolar Bose gases