Multicanonical hybrid Monte Carlo for compact QED

Details Multicanonical hybrid Monte Carlo for compact QED Multicanonical hybrid Monte Carlo for compact QED

1999-09-14

arxiv.org/abs/hep-lat/9909111v1

Nucl.Phys.Proc.Suppl. 83 (2000) 768-770

Physics

High Energy Physics

High Energy Physics - Lattice

LATTICE(Algorithm) 3 pages,1 figure

Scientific paper

We demonstrate that substantial progress can be achieved in the study of the phase structure of 4-dimensional compact QED by a joint use of hybrid Monte Carlo and multicanonical algorithms, through an efficient parallel implementation. This is borne out by the observation of considerable speedup of tunnelling between the metastable states, close to the phase transition, on the Wilson line. Our approach leads to a general parallelization scheme for the efficient stochastic sampling of systems where (a part of) the Hamiltonian involves the total action or energy in each update step.

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