Stability of an attractive bosonic cloud with van der Waals interaction

Journal Article · Fri Oct 15 04:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.043607· OSTI ID:21454814

Biswas, Anindya; Das, Tapan Kumar ^[1]; Salasnich, Luca ^[2]; Chakrabarti, Barnali ^[3]

---

1. Department of Physics, University of Calcutta, 92 A.P.C. Road, Kolkata 700009 (India)
2. Dipartimento di Fisica 'Galileo Galilei', CNR and CNISM, Unita di Padova, Universita di Padova, Via Marzolo 8, IT-35122 Padova (Italy)
3. Department of Physics, Lady Brabourne College, P1/2 Surawardi Avenue, Kolkata 700017 (India)

We investigate the structure and stability of Bose-Einstein condensates of {sup 7}Li atoms with realistic van der Waals interactions by using the potential harmonic expansion method. Besides the known low-density metastable solution with a contact {delta}-function interaction, we find a stable branch at a higher density which corresponds to the formation of an atomic cluster. Comparison with the results of a nonlocal effective interaction is also presented. We analyze the effect of trap size on the transition between the two branches of solutions. We also compute the loss rate of a Bose condensate due to two- and three-body collisions.

• OSTI ID: 21454814
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 82; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
ATOMIC CLUSTERS
ATOMS
BOSE-EINSTEIN CONDENSATION
COLLISIONS
COMPARATIVE EVALUATIONS
DELTA FUNCTION
DENSITY
EVALUATION
FUNCTIONS
ISOTOPES
LIGHT NUCLEI
LITHIUM 7
LITHIUM ISOTOPES
MANY-BODY PROBLEM
MATHEMATICAL SOLUTIONS
NUCLEI
ODD-EVEN NUCLEI
PHASE STABILITY
PHYSICAL PROPERTIES
POTENTIALS
STABILITY
STABLE ISOTOPES
THREE-BODY PROBLEM
TRAPS
VAN DER WAALS FORCES