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- W2017375869 abstract "Inspired by the wavefunction forms of exactly solvable algebraic Hamiltonians, we present several wavefunction ansatze. These wavefunction forms are exact for two-electron systems; they are size consistent; they include the (generalized) antisymmetrized geminal power, the antisymmetrized product of strongly orthogonal geminals, and a Slater determinant wavefunctions as special cases. The number of parameters in these wavefunctions grows only linearly with the size of the system. The parameters in the wavefunctions can be determined by projecting the Schrödinger equation against a test-set of Slater determinants; the resulting set of nonlinear equations is reminiscent of coupled-cluster theory, and can be solved with no greater than O (N5) scaling if all electrons are assumed to be paired, and with O (N6) scaling otherwise. Based on the analogy to coupled-cluster theory, methods for computing spectroscopic properties, molecular forces, and response properties are proposed." @default.
- W2017375869 created "2016-06-24" @default.
- W2017375869 creator A5003537610 @default.
- W2017375869 creator A5025358076 @default.
- W2017375869 creator A5032670273 @default.
- W2017375869 creator A5058992816 @default.
- W2017375869 creator A5067765622 @default.
- W2017375869 creator A5090639867 @default.
- W2017375869 date "2013-01-01" @default.
- W2017375869 modified "2023-09-26" @default.
- W2017375869 title "A size-consistent approach to strongly correlated systems using a generalized antisymmetrized product of nonorthogonal geminals" @default.
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