𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Ground state properties of the two-dimensional spin fermion model

✍ Scribed by Nobuo Furukawa; Masatoshi Imada

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

No coin nor oath required. For personal study only.

✦ Synopsis

Two dimensional spin-fermion model is studied by using the perturbation method and the spin wave approximation. Non-crossing diagrams are calculated using the dominant pole approximation. As a result, we see that the renormalization parameter z is reduced as z Β’x L -1;4, where L is the linear dimension of the system, and the doped fermion becomes totally incoherent in the thermodynamic limit.

πŸ“œ SIMILAR VOLUMES

On the magnetisation of the ground state
On the magnetisation of the ground states in two dimensional Ising spin glasses
✍ Francisco Barahona; Adolfo Casari πŸ“‚ Article πŸ“… 1988 πŸ› Elsevier Science 🌐 English βš– 414 KB

We study the configurations of minimum energy among those with zero magnetisation in Ising spin glasses. We formulate that problem as a graph partitioning problem and we give an algorithm for it. We determine the concentration of negative interactions such that those configurations give a ground sta