The strong coupling constant at small momentum as an instanton detector
We present a study of ¿MOM(p) at small p computed from the lattice in the quenched approximation (nf = 0). It shows a dramatic proptop4 law which can be understood within an instanton liquid model. In this framework the prefactor gives a direct measure of the instanton density in thermalised configu...
| Autores: | , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2003 |
| País: | España |
| Institución: | Universidad Pablo de Olavide (UPO) |
| Repositorio: | RIO. Repositorio Institucional Olavide |
| Idioma: | inglés |
| OAI Identifier: | oai:rio.upo.es:10433/1010 |
| Acceso en línea: | http://hdl.handle.net/10433/1010 |
| Access Level: | acceso abierto |
| Palabra clave: | Lattice Gauge field theories Confinement Solitons monopoles and instantons Lattice QCD |
| Sumario: | We present a study of ¿MOM(p) at small p computed from the lattice in the quenched approximation (nf = 0). It shows a dramatic proptop4 law which can be understood within an instanton liquid model. In this framework the prefactor gives a direct measure of the instanton density in thermalised configurations. A preliminary result for this density is 5.27(4) fm¿4. |
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