1. Lattice saddle-point configurations in SU (2)3
- Author
-
Robert D. Mawhinney and Anthony Duncan
- Subjects
Physics ,Nuclear and High Energy Physics ,High Energy Physics::Lattice ,Lattice field theory ,Monte Carlo method ,symbols.namesake ,Fourier transform ,Saddle point ,Lattice gauge theory ,Quantum electrodynamics ,Lattice (order) ,symbols ,Saddle ,Special unitary group ,Mathematical physics - Abstract
We have implemented a procedure, which we call extremization, that deterministically evolves a configuration of lattice field theory towards a solution of the lattice field equations. The solution obtained need not be a local minimum of the action. A Fourier accelerated version of the algorithm is used in three-dimensional SU (2) lattice gauge theory to generate saddle-point solutions of the lattice field equations from Monte Carlo generated lattices. We find that the string tension persists under moderate extremization, during which the average action decreases by a factor of about 100 and the lattices show localized peaks in the action density, as seen in cooling. Continued extremization removes the plateau in the Creutz ratios.
- Published
- 1992
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