A parametric low-rank update to the Hamiltonian reduces the A-body problem exactly to a low-dimensional matrix equation at fixed energy.
om , author R. J. \ Furnstahl , author S. K\
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A structure-preserving low-rank factorization of 2RDMs achieves linear rank scaling with system size and ~99% compression while retaining chemical accuracy for correlated states.
The review describes how SSRPA fixes SRPA pathologies in EDF theory, presents applications to charge-conserving and charge-exchange excitations with experimental comparisons, and discusses impacts on the nuclear equation of state.
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Exact emulation of few-body systems at low cost
A parametric low-rank update to the Hamiltonian reduces the A-body problem exactly to a low-dimensional matrix equation at fixed energy.
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Low-rank compression of two-electron reduced density matrices
A structure-preserving low-rank factorization of 2RDMs achieves linear rank scaling with system size and ~99% compression while retaining chemical accuracy for correlated states.
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Recent applications of the subtracted second RPA method
The review describes how SSRPA fixes SRPA pathologies in EDF theory, presents applications to charge-conserving and charge-exchange excitations with experimental comparisons, and discusses impacts on the nuclear equation of state.