A global optimization method for Landau gauge fixing in lattice QCD

• Autor(es): Oliveira, O. ; Silva, P. J.
• Data: 2004
• Identificador Persistente: http://hdl.handle.net/10316/4451
• Origem: Estudo Geral - Universidade de Coimbra
• Assunto(s): Lattice QCD; Landau gauge; Gauge fixing; Gribov copies
• Tipo de Documento: Artigo
• Idioma: Inglês

Descrição

An algorithm for gauge fixing to the Landau gauge in the fundamental modular region in lattice QCD is described. The method, a combination of an evolutionary algorithm with a steepest descent method, is able to solve the problem of the nonperturbative gauge fixing. The performance of the combined algorithm is investigated on 84, [beta]=5.7, and 164, [beta]=6.0, lattice SU(3) gauge configurations. http://www.sciencedirect.com/science/article/B6TJ5-4BMTMN0-3/1/17fcaa643a6848d4ea1fe488f7188dc9