Use of correlated potential harmonic basis functions for the description of the {sup 4}He trimer and small clusters

Journal Article · Thu Apr 28 04:00:00 EDT 2011 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.3583365· OSTI ID:21560197

Das, Tapan Kumar ^[1]; Chakrabarti, Barnali; Canuto, Sylvio ^[2]

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1. Department of Physics, University of Calcutta, 92 A.P.C. Road, Kolkata 700009 (India)
2. Instituto de Fisica, Universidade de Sao Paulo, CP 66318, 05315-970, Sao Paulo, SP (Brazil)

A correlated many-body basis function is used to describe the {sup 4}He trimer and small helium clusters ({sup 4}He{sub N}) with N= 4 - 9. A realistic helium dimer potential is adopted. The ground state results of the {sup 4}He dimer and trimer are in close agreement with earlier findings. But no evidence is found for the existence of Efimov state in the trimer for the actual {sup 4}He-{sup 4}He interaction. However, decreasing the potential strength we calculate several excited states of the trimer which exhibit Efimov character. We also solve for excited state energies of these clusters which are in good agreement with Monte Carlo hyperspherical description.

• OSTI ID: 21560197
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 16 Vol. 134; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
74 ATOMIC AND MOLECULAR PHYSICS
ATOMIC CLUSTERS
BOSE-EINSTEIN CONDENSATION
CALCULATION METHODS
DIMERS
ELEMENTS
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
FLUIDS
FUNCTIONS
GASES
GROUND STATES
HELIUM
HELIUM 4
HELIUM ISOTOPES
INTERACTIONS
ISOTOPES
LIGHT NUCLEI
MANY-BODY PROBLEM
MOLECULES
MONTE CARLO METHOD
NONMETALS
NUCLEI
POTENTIALS
RARE GASES
STABLE ISOTOPES