Collapse dynamics of a {sup 176}Yb-{sup 174}Yb Bose-Einstein condensate
- Department of Physics and Astrophysics, University of Delhi, Delhi-110007 (India)
In this paper, we present a theoretical study of a two-component Bose-Einstein condensate composed of ytterbium (Yb) isotopes in a three-dimensional anisotropic harmonic potential. The condensate consists of a mixture of {sup 176}Yb atoms which have a negative s-wave scattering length and {sup 174}Yb atoms having a positive s-wave scattering length. We study the ground-state as well as dynamic properties of this two-component condensate. Due to the attractive interactions between {sup 176}Yb atoms, the condensate of {sup 176}Yb undergoes a collapse when the particle number exceeds a critical value. The critical number and the collapse dynamics are modified due to the presence of {sup 174}Yb atoms. We use coupled two-component Gross-Pitaevskii equations to study the collapse dynamics. The theoretical results obtained are in reasonable agreement with the experimental results of Fukuhara et al. [Phys. Rev. A 79, 021601(R) (2009)].
- OSTI ID:
- 21439511
- Journal Information:
- Physical Review. A, Vol. 81, Issue 6; Other Information: DOI: 10.1103/PhysRevA.81.063603; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ANISOTROPY
ATOMS
BOSE-EINSTEIN CONDENSATION
HARMONIC POTENTIAL
INTERATOMIC FORCES
MIXTURES
S WAVES
SCATTERING LENGTHS
WAVE EQUATIONS
YTTERBIUM 174
YTTERBIUM 176
DIFFERENTIAL EQUATIONS
DIMENSIONS
DISPERSIONS
EQUATIONS
EVEN-EVEN NUCLEI
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LENGTH
NUCLEAR POTENTIAL
NUCLEI
PARTIAL DIFFERENTIAL EQUATIONS
PARTIAL WAVES
POTENTIALS
RADIOISOTOPES
RARE EARTH NUCLEI
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
YTTERBIUM ISOTOPES