"model" in inglés with examples - Collocation dictionary inglés
- In contrast, the Hubbard model applies to fermionic particles such as electrons, rather than bosons.
- The Hubbard model is an approximate theory that can include these interactions.
- Since then the method has been extended to other models in one dimension: Bose gas, Hubbard model, etc.
- The Hubbard model is in general intractable under usual perturbation expansion techniques.
- In particular, they are used to engineer one, two and three dimensional lattices for a Hubbard model with pre-specified parameters.
- However there is no exact solution of the Hubbard model in more than one dimension.
- If interactions between particles on different sites of the lattice are included, the model is often referred to as the 'extended Hubbard model'.
- For electrons in a solid, the Hubbard model can be considered as an improvement on the tight-binding model, which includes only the hopping term.
- The Hubbard model is based on the tight-binding approximation from solid state physics.
- Expressed in terms of the Hubbard model, on the other hand, the Hamiltonian is now made up of two components.
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