Soft confinement in a 3-d spin system
| Autor: | Odagiri, K., Yanagisawa, T. |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | EPJ C73:2525 (2013) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1140/epjc/s10052-013-2525-4 |
| Popis: | We consider a 1+3 dimensional spin system. The spin-wave (magnon) field is described by the O(3) non-linear sigma model with a symmetry-breaking potential. This interacts with a slow spin SU(2) doublet Schrodinger fermion. The interaction is described by a generalized nonperturbative Yukawa coupling, and the self-consistency condition is solved with the aid of a non-relativistic Gribov equation. When the Yukawa coupling is sufficiently strong, the solution exhibits supercriticality and soft confinement, in a way that is quite analogous to Gribov's light-quark confinement theory. The solution corresponds to a new type of spin polaron, whose condensation may lead to exotic superconductivity. Comment: 8 pages, uses axodraw.sty; the final publication is available at link.springer.com |
| Databáze: | arXiv |
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