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Title: Two-channel model of photoassociation in the vicinity of a Feshbach resonance

Abstract

We derive the two-channel (TC) description of the photoassociation (PA) process in the presence of a magnetic Feshbach resonance and compare to full coupled multichannel calculations for the scattering of {sup 6}Li-{sup 87}Rb. Starting from a similar approach as that of Pellegrini et al. [Phys. Rev. Lett. 101, 053201 (2008)] we arrive at a simpler expression which fully describes the PA process by two parameters: the maximal transition rate and the point of vanishing transition rate. The TC approximation reproduces excellently the PA transition rates of the full multichannel calculation and reveals, e.g., that the enhancement of the rate at a resonance is directly connected to the position of vanishing rate. For the description of two independent resonances it was found that only three parameters completely characterize the PA process.

Authors:
;  [1]
  1. AG Moderne Optik, Institut fuer Physik, Humboldt-Universitaet zu Berlin, Hausvogteiplatz 5-7, 10117 Berlin (Germany)
Publication Date:
OSTI Identifier:
21352280
Resource Type:
Journal Article
Journal Name:
Physical Review. A
Additional Journal Information:
Journal Volume: 80; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevA.80.061401; (c) 2009 The American Physical Society; Journal ID: ISSN 1050-2947
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; APPROXIMATIONS; ATOM-ATOM COLLISIONS; COMPARATIVE EVALUATIONS; LITHIUM; LITHIUM 6; MESONS; PHOTOCHEMISTRY; RESONANCE; RUBIDIUM; RUBIDIUM 87; SCATTERING; ALKALI METALS; ATOM COLLISIONS; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; BOSONS; CALCULATION METHODS; CHEMISTRY; COLLISIONS; ELEMENTARY PARTICLES; ELEMENTS; EVALUATION; HADRONS; INTERMEDIATE MASS NUCLEI; ISOTOPES; LIGHT NUCLEI; LITHIUM ISOTOPES; METALS; NUCLEI; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIOISOTOPES; RUBIDIUM ISOTOPES; STABLE ISOTOPES; YEARS LIVING RADIOISOTOPES

Citation Formats

Schneider, Philipp-Immanuel, and Saenz, Alejandro. Two-channel model of photoassociation in the vicinity of a Feshbach resonance. United States: N. p., 2009. Web. doi:10.1103/PHYSREVA.80.061401.
Schneider, Philipp-Immanuel, & Saenz, Alejandro. Two-channel model of photoassociation in the vicinity of a Feshbach resonance. United States. https://doi.org/10.1103/PHYSREVA.80.061401
Schneider, Philipp-Immanuel, and Saenz, Alejandro. 2009. "Two-channel model of photoassociation in the vicinity of a Feshbach resonance". United States. https://doi.org/10.1103/PHYSREVA.80.061401.
@article{osti_21352280,
title = {Two-channel model of photoassociation in the vicinity of a Feshbach resonance},
author = {Schneider, Philipp-Immanuel and Saenz, Alejandro},
abstractNote = {We derive the two-channel (TC) description of the photoassociation (PA) process in the presence of a magnetic Feshbach resonance and compare to full coupled multichannel calculations for the scattering of {sup 6}Li-{sup 87}Rb. Starting from a similar approach as that of Pellegrini et al. [Phys. Rev. Lett. 101, 053201 (2008)] we arrive at a simpler expression which fully describes the PA process by two parameters: the maximal transition rate and the point of vanishing transition rate. The TC approximation reproduces excellently the PA transition rates of the full multichannel calculation and reveals, e.g., that the enhancement of the rate at a resonance is directly connected to the position of vanishing rate. For the description of two independent resonances it was found that only three parameters completely characterize the PA process.},
doi = {10.1103/PHYSREVA.80.061401},
url = {https://www.osti.gov/biblio/21352280}, journal = {Physical Review. A},
issn = {1050-2947},
number = 6,
volume = 80,
place = {United States},
year = {Tue Dec 15 00:00:00 EST 2009},
month = {Tue Dec 15 00:00:00 EST 2009}
}