Near-threshold Feshbach resonances in interatomic collisions and spectra

Frauke Schwarz, Tim Oliver Müller, Harald Friedrich

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We study the influence of a single Feshbach resonance on the near-threshold bound and continuum states in interatomic potentials with attractive tails. We present an energy-independent parametrization of the Feshbach resonance to reveal its influence on the bound state spectrum as well as on the scattering properties. The applicability of this parametrization is confirmed by comparison with numerical coupled-channel calculations. A formula for the scattering length is derived, which-in contrast to previous parametrizations-transparently exposes the dependence on the characteristic quantities of the uncoupled channels and on channel-coupling effects and is valid for all deep potentials falling off faster than -1/r3 asymptotically.

Original languageEnglish
Article number052703
JournalPhysical Review A
Volume85
Issue number5
DOIs
StatePublished - 4 May 2012

Fingerprint

Dive into the research topics of 'Near-threshold Feshbach resonances in interatomic collisions and spectra'. Together they form a unique fingerprint.

Cite this