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A global optimization method for Landau gauge fixing in lattice QCD. (English) Zbl 1196.81035

Summary: 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 \(8^{4}, \beta =5.7\), and \(16^{4}, \beta =6.0\), lattice \(SU(3)\) gauge configurations.

MSC:

81-04 Software, source code, etc. for problems pertaining to quantum theory
81T99 Quantum field theory; related classical field theories
90C30 Nonlinear programming

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References:

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