A variational nodal partition decomposes correlation energy into E_sym containing dynamic and strong correlation and E_stat isolating the antisymmetric sign-structure component as an energy penalty from node constraint.
Dubeck´ y, Bias cancellation in one-determinant fixed- node diffusion monte carlo: Insights from fermionic oc- cupation numbers, Phys
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From Wavefunction Sign Structure to Static Correlation
A variational nodal partition decomposes correlation energy into E_sym containing dynamic and strong correlation and E_stat isolating the antisymmetric sign-structure component as an energy penalty from node constraint.