Published September 1991
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Ground-state projection multigrid for propagators in 4-dimensional SU(2) gauge fields
- 1. Hamburg Univ. (Germany). 2. Inst. fuer Theoretische Physik
Description
The ground-state projection multigrid method is studied for computations of slowly decaying bosonic propagators in 4-dimensional SU(2) lattice gauge theory. The defining eigenvalue equation for the restriction operator is solved exactly. Although the critical exponent z is not reduced in nontrivial gauge fields, multigrid still yields considerable speedup compared with conventional relaxation. Multigrid is also able to outperform the conjugate gradient algorithm. (orig.)
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MF available from INIS under the Report Number.
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Additional details
Publishing Information
- Imprint Pagination
- 10 p.
- Report number
- DESY--91-099
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 23017658
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- ALGORITHMS; COMPUTER CALCULATIONS; CONVERGENCE; EIGENVALUES; FOUR-DIMENSIONAL CALCULATIONS; GROUND STATES; INTERMEDIATE VECTOR BOSONS; ITERATIVE METHODS; LATTICE FIELD THEORY; PROPAGATOR; QUANTUM OPERATORS; RELAXATION; RELAXATION TIME; SU-2 GROUPS; UNIFIED GAUGE MODELS; VECTOR FIELDS
- Descriptors DEC
- BOSONS; CONSTRUCTIVE FIELD THEORY; ELEMENTARY PARTICLES; ENERGY LEVELS; FIELD THEORIES; INTERMEDIATE BOSONS; LIE GROUPS; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; PARTICLE MODELS; QUANTUM FIELD THEORY; SU GROUPS; SYMMETRY GROUPS