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Existence of an incommensurate ground state of interacting spinless fermions in infinite dimensions

โœ Scribed by G.S. Uhrig; R. Vlaming


Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
239 KB
Volume
206-207
Category
Article
ISSN
0921-4526

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Periodic ground states in simple models
โœ N. Macris ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 392 KB

A model of itinerant lattice electrons interacting with classical nuclei is studied. The electrons can interact between themselves via a Hubbard on-site term, It is shown that, in the ground state of the half-filled band, the nuclei form a periodic crystal. More precisely for a cubic lattice they fo