Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
1993-12-06
Physics
High Energy Physics
High Energy Physics - Lattice
3 pages of A4 format including 7-figures
Scientific paper
10.1016/0920-5632(94)90515-0
Results of our autocorrelation measurement performed on Fujitsu AP1000 are reported. We analyze (i) typical autocorrelation time, (ii) optimal mixing ratio between overrelaxation and pseudo-heatbath and (iii) critical behavior of autocorrelation time around cross-over region with high statistic in wide range of $\beta$ for pure SU(3) lattice gauge theory on $8^4$, $16^4$ and $32^4$ lattices. For the mixing ratio K, small value (3-7) looks optimal in the confined region, and reduces the integrated autocorrelation time by a factor 2-4 compared to the pseudo-heatbath. On the other hand in the deconfined phase, correlation times are short, and overrelaxation does not seem to matter For a fixed value of K(=9 in this paper), the dynamical exponent of overrelaxation is consistent with 2 Autocorrelation measurement of the topological charge on $32^3 \times 64$ lattice at $\beta$ = 6.0 is also briefly mentioned.
Akemi K.
deForcrand Ph.
Fujisaki M.
Hashimoto Tsutomu
Hioki Shinji
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