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- W2045668133 abstract "The 'v-representability problem' arising in density functional theory is this: for an -particle system of interacting identical particles, can every one-particle density of finite intrinsic energy be realized as a ground-state density upon modifying the Hamiltonian by addition of an appropriate external one-body potential v? The answer is known to be no. We show that the answer is yes, if the inter-particle interaction is bounded, and allowed modifications are broadened from one-body potentials to local one-body operators. The required operator is obtained from a non-standard potential (in the sense of non-standard analysis) which is a simple function defined on a regular grid of infinitesimal finesse. At a vague conceptual level, therefore, the result is not far from universal v-representability." @default.
- W2045668133 created "2016-06-24" @default.
- W2045668133 creator A5049943112 @default.
- W2045668133 date "2015-01-28" @default.
- W2045668133 modified "2023-09-23" @default.
- W2045668133 title "Beyondv-representability: local one-body Hamiltonians for arbitrary densities" @default.
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- W2045668133 doi "https://doi.org/10.1088/1751-8113/48/7/075204" @default.
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