Phonon decay in 1D atomic Bose quasicondensates via Beliaev-Landau damping
arXiv:2205.15826 · doi:10.1103/PhysRevB.106.214528
Abstract
In a 1D Bose gas, there is no non-trivial scattering channel involving three Bogoliubov quasiparticles that conserves both energy and momentum. Nevertheless, we show that such 3-wave mixing processes (Beliaev and Landau damping) account for their decay via interactions with thermal fluctuations. Within an appropriate time window where the Fermi Golden Rule is expected to apply, the occupation number of the initially occupied mode decays exponentially and the rate takes a simple analytic form. The result is shown to compare favorably with simulations based on the Truncated Wigner Approximation. It is also shown that the same processes slow down the exponential growth of phonons induced by a parametric oscillation.
arXiv comment12 pages, 6 figures; Appendices: 16 pages, 8 figures; Version accepted for publication in Physical Review B
References in corpus (23)
- Relaxation in a Completely Integrable Many-Body Quantum System: An Ab Initio Study of the Dynamics of the Highly Excited States of Lattice Hard-Core Bosons
- Sonic analog of gravitational black holes in Bose-Einstein condensates
- One-Dimensional Quantum Liquids: Beyond the Luttinger Liquid Paradigm
- Dynamical quantum noise in Bose-Einstein condensates
- Observation of thermal Hawking radiation at the Hawking temperature in an analogue black hole
- The truncated Wigner method for Bose condensed gases: limits of validity and applications
- Extension of Bogoliubov theory to quasi-condensates
- An acoustic analog to the dynamical Casimir effect in a Bose-Einstein condensate
- Landau damping in dilute Bose gases
- Damping of low-energy excitations of a trapped Bose condensate at finite temperatures
- Spontaneous microcavity-polariton coherence across the parametric threshold: Quantum Monte Carlo studies
- Quantum and thermal effects in dark soliton formation and dynamics in a 1D Bose gas
- Relaxation of a high-energy quasiparticle in a one-dimensional Bose gas
- Phase-Space Methods for Simulating the Dissipative Many-Body Dynamics of Collective Spin Systems
- Quantum entanglement due to modulated Dynamical Casimir Effect
- Damping of Bogoliubov Excitations in Optical Lattices
- Decay of Bogoliubov excitations in one-dimensional Bose gases
- Nonlinearities induced by parametric resonance in effectively 1D atomic Bose condensates
- Spontaneous Beliaev-Landau scattering out of equilibrium
- Absence of damping of low energy excitations in a quasi-2D dipolar Bose gas
- Decay of Bogoliubov quasiparticles in a nonideal one-dimensional Bose gas
- The influence of the interaction between quasiparticles on parametric resonance in Bose-Einstein quasicondensates
- Damping of elementary excitations in one-dimensional dipolar Bose gases
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- Parametric pair production of collective excitations in a Bose-Einstein condensate
- Bound Bogoliubov quasiparticles in photon superfluids
- Quantum backreaction in an analog black hole