Coupled-Cluster Valence Bond Theory for Exact Treatment of Spin-Fluctuation

ORAL

Abstract

We present a valence bond approach for treating spin-fluctuation called coupled-cluster valence bond (CCVB). In particular, we will discuss the three-pair extension of CCVB, CCVB+i3, and its application to spin-frustrated systems such as molecular magnets. CCVB+i3 can describe spin-fluctuation exactly without invoking neither an exponential wall nor spin contamination. We also discuss a future direction on including charge-fluctuation into this model.

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Presenters

  • Joonho Lee

    • University of California, Berkeley
    • College of Chemistry, University of California, Berkeley

Authors

  • Joonho Lee

    • University of California, Berkeley
    • College of Chemistry, University of California, Berkeley

  • David Small

    • College of Chemistry, University of California, Berkeley

  • Martin Head-Gordon

    • University of California, Berkeley
    • College of Chemistry, University of California, Berkeley