Biorthogonal projected energies of a Gutzwiller similarity transformed Hamiltonian

Abstract

We present a method incorporating biorthogonal orbital-optimization, symmetry projection, and double-occupancy screening with a non-unitary similarity transformation generated by the Gutzwiller factor $n_{i\uparrow }{n}_{i\downarrow }$, and apply it to the Hubbard model. Energies are calculated with mean-field computational scaling with high-quality results comparable to coupled cluster singles and doubles. This builds on previous work performing similarity transformations with more general, two-body Jastrow-style correlators. The theory is tested on two-dimensional lattices ranging from small systems into the thermodynamic limit and is compared to available reference data.

References in corpus (2)

• The ALPS project release 1.3: open source software for strongly correlated systems
• Lie Algebraic Similarity Transformed Hamiltonians for Lattice Model Systems

Cited by in corpus (3)

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