SWhat changed
Introduced a simplified narrow-band interacting-electron model and approximate solution.
Scientific scope
The record is Hubbard’s sole-author 1963 Royal Society paper. The model and approximation are distinct from exact solutions, later Hubbard papers, material-specific validation and the whole modern Hubbard-model literature.
Evidence
The linked sources identify this contribution and its scope. WRS has not independently reconstructed the scientific claims. The record is Hubbard’s sole-author 1963 Royal Society paper. The model and approximation are distinct from exact solutions, later Hubbard papers, material-specific validation and the whole modern Hubbard-model literature.
Contributors
- J. Hubbard · SCIENCE: Named source author of the scoped work; individual effort shares are not measured.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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