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Accurate Rovibrational State Energies Of Bosonic Van Der Waal Dimers

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  • MERVLYN MOODLEY

    (School of Chemistry and Physics, Quantum Research Group, University of KwaZulu-Natal, Westville Campus, Private Bag X54001, Durban 4000, South Africa)

Abstract

Over the past few decades many new and improved techniques have been developed to calculate ground and excited states of atomic clusters with varying degrees of accuracy. Together with progressively enhanced computer capabilities and the development of sophisticated techniques, the accuracy of results obtained fromab initiomethods are closely approximating machine precision. In this paper, we use the finite difference method, whose precision is only governed by the machine precision, together with an optimization criterion to calculate the spectrum of two-body van der Waal clusters. This method is also shown to be robust enough to calculate energies close to the unbinding transition.

Suggested Citation

  • Mervlyn Moodley, 2013. "Accurate Rovibrational State Energies Of Bosonic Van Der Waal Dimers," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 24(08), pages 1-11.
    • Handle: RePEc:wsi:ijmpcx:v:24:y:2013:i:08:n:s0129183113500575
    DOI: 10.1142/S0129183113500575
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