Author/Authors :
B. Allés، نويسنده , , G. Boyd، نويسنده , , M. DʹElia، نويسنده , , A. Di Giacomo، نويسنده , , E. Vicari، نويسنده ,
Abstract :
We investigate the performance of the hybrid Monte Carlo algorithm, the standard algorithm used for lattice QCD simulations involving fermions, in updating non-trivial global topological structures. We find that the hybrid Monte Carlo algorithm has serious problems decorrelating the global topological charge. This represents a warning which must be seriously considered when simulating full QCD by hybrid Monte Carlo.
