Using the one-loop functional renormalization group technique we evaluate the self-energy in the weak-coupling regime of the 2D t-t 0 Hubbard model. At van Hove (vH) band fillings and at low temperatures the quasiparticle weight along the Fermi surface (FS) continuously vanishes on approaching the (
Kinetic equations, quasiparticles and renormalization
โ Scribed by F. Henin; I. Prigogine; P. Resibois; M. Watabe
- Publisher
- Elsevier Science
- Year
- 1965
- Weight
- 161 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0031-9163
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