Interatomic collisions in a tightly confined Bose gas
By D. Petrov, G. Shlyapnikov. 2000
315 citations recorded by the source corpus.
We discuss binary atomic collisions in a Bose gas tightly confined in one (axial) direction and identify two regimes of scattering. In the quasi-two-dimensional (quasi-2D) regime, where the confinement frequency ${\ensuremath{\omega}}_{0}$ greatly exceeds the gas temperature $T,$ the scattering rates exhibit 2D features of the particle motion. At temperatures $T\ensuremath{\sim}\ensuremath{\Elzxh}{\ensuremath{\omega}}_{0}$ one has a confinement-dominated 3D regime, where the confinement can change the momentum dependence of the scattering amplitudes. We describe the collision-induced energy exchange between the axial and radial degrees of freedom and analyze recent experiments on thermalization and spin-relaxation rates in a tightly (axially) confined gas of Cs atoms.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/efebf1b441b4055664b0e615596917e73f124d22
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Universal few-body physics and cluster formation (2017, methodology): “…provide infinity-free calculations of scattering observables based on physical grounds, and avoids the need for additional regularization schemes which have been previously utilized in the pseudopotential approaches of (Granger and Blume, 2004; Olshanii, 1998; Petrov and Shlyapnikov, 2001).”
- Feshbach resonances in ultracold gases (2008, background): “(Petrov et al., 2000; Petrov and Shlyapnikov, 2001) derived a similar coupling constant for one-dimensional confinement or two-dimensional scattering.”
- Controlling the quantum stereodynamics of ultracold bimolecular reactions (2010, methodology): “For the comparison, the 2D loss rate is scaled to 3D using β3D = √ πahoβ2D [19, 27, 28], where aho is the harmonic oscillator length in ẑ.”
- Cold and ultracold molecules: science, technology and applications (2009, background): “The energy dependence of cross sections for molecular collisions in confined and quasi-confined geometries is different from Wigner’s threshold laws in three dimensions [62, 119, 120].”