Published June 2003 | Version v1
Journal article Metadata-only

Very-high-precision bound-state spectroscopy near a 85Rb Feshbach resonance

Creators

  • 1. Department of Physics, University of Colorado, Boulder, Colorado 80309-0440 (United States)
  • 2. JILA, National Institute of Standards and Technology, University of Colorado, Colorado 80309-0440 (United States)

Description

We precisely measured the binding energy (εbind) of a molecular state near the Feshbach resonance in a 85Rb Bose-Einstein condensate (BEC). Rapid magnetic-field pulses induced coherent atom-molecule oscillations in the BEC. We measured the oscillation frequency as a function of B field and fit the data to a coupled-channel model. Our analysis constrained the Feshbach resonance position [155.041(18) G], width [10.71(2) G], and background scattering length [-443(3)a0] and yielded new values for the Rb interaction parameters. These results improved our estimate for the stability condition of an attractive BEC. We also found evidence for a mean-field shift to εbind

Additional details

Identifiers

DOI
10.1103/PhysRevA.67.060701;
arXiv
arXiv:cond-mat/0302195v1;

Publishing Information

Journal Title
Physical Review. A
Journal Volume
67
Journal Issue
6
Journal Page Range
p. 060701-060701.4
ISSN
1050-2947
CODEN
PLRAAN

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36079804
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
Descriptors DEI
ACCURACY; ATOMS; BINDING ENERGY; BOSE-EINSTEIN CONDENSATION; BOUND STATE; COUPLED CHANNEL THEORY; MAGNETIC FIELDS; MEAN-FIELD THEORY; MOLECULES; OSCILLATIONS; POTENTIAL ENERGY; PULSES; RESONANCE; RUBIDIUM 85; SCATTERING LENGTHS; SPECTROSCOPY; STABILITY
Descriptors DEC
DIMENSIONS; ENERGY; INTERMEDIATE MASS NUCLEI; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; LENGTH; NANOSECONDS LIVING RADIOISOTOPES; NUCLEI; ODD-EVEN NUCLEI; RADIOISOTOPES; RUBIDIUM ISOTOPES; STABLE ISOTOPES

Optional Information

Notes
(c) 2003 The American Physical Society