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Renormalization group analysis of the doped antiferromagnet in the two-dimensional space

✍ Scribed by Takashi Yanagisawa


Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
192 KB
Volume
185-189
Category
Article
ISSN
0921-4534

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Properties of doped holes in the antifer
✍ G. Vignale; M.R. Hedayati πŸ“‚ Article πŸ“… 1989 πŸ› Elsevier Science 🌐 English βš– 128 KB

We calculate the self-energy of a single hole in the half-filled antlferromaguetic two-dimensional Hubbard model. The minimum energy occurs at k = (7r/2, 7r/2) and is 37% lower than in Hartree-Fock. The hole lifetime tends to infinity for low-lying states, showing that quasiholes are well-defined ex