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    Optimization of the valence energy variance of the CuH molecule

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    Author
    Belohorec, Peter.
    Keyword
    Molecules.
    Valence (Theoretical chemistry)
    Monte Carlo method.
    Valence fluctuations.
    
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    URI
    http://hdl.handle.net/10464/1988
    Abstract
    We developed the concept of split-'t to deal with the large molecules (in terms of the number of electrons and nuclear charge Z). This naturally leads to partitioning the local energy into components due to each electron shell. The minimization of the variation of the valence shell local energy is used to optimize a simple two parameter CuH wave function. Molecular properties (spectroscopic constants and the dipole moment) are calculated for the optimized and nearly optimized wave functions using the Variational Quantum Monte Carlo method. Our best results are comparable to those from the single and double configuration interaction (SDCI) method.
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