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A lattice model balancing particle hopping against local interaction, most commonly an on-site electron repulsion. It is a minimal model for correlation effects, not a universal microscopic Hamiltonian for every solid.
wp-physics-hubbard-modelwp-physics-many_body_quantum_mechanicsmit-theory-of-solidsEach relation below ends at this concept.
This is an authored directed relation from the source endpoint to the target endpoint.
The Hubbard model idealizes selected electronic bands by hopping and local interactions. It may be derived after projection in favorable cases but is often used phenomenologically without a universal error bound.
The target is a model, idealization, restricted ansatz, approximation scheme, phenomenological fit, or historical representation used for the source system or theory. It need not have a universal small error parameter and is not thereby a controlled limit or effective theory. The edge label and detail must identify the precise status.
wp-physics-hubbard-modelwp-physics-many_body_quantum_mechanicsmit-theory-of-solidsEach relation below starts at this concept.
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