Testing Algorithms for Finite Temperature Lattice QCD

Details Testing Algorithms for Finite Temperature Lattice QCD Testing Algorithms for Finite Temperature Lattice QCD

2006-08-23

arxiv.org/abs/hep-lat/0608016v1

Nucl.Phys.A785:270-273,2007

Physics

High Energy Physics

High Energy Physics - Lattice

4 pages, 2 figures, poster presented at International Conference on Strong and Electroweak Matter 2006 (SEWM2006), BNL, May 10

Scientific paper

10.1016/j.nuclphysa.2006.11.149

We discuss recent algorithmic improvements in simulating finite temperature QCD on a lattice. In particular, the Rational Hybrid Monte Carlo(RHMC) algorithm is employed to generate lattice configurations for 2+1 flavor QCD. Unlike the Hybrid R Algorithm, RHMC is reversible, admitting a Metropolis accept/reject step that eliminates the $\mathcal{O}(\delta t^2)$ errors inherent in the R Algorithm. We also employ several algorithmic speed-ups, including multiple time scales, the use of a more efficient numerical integrator, and Hasenbusch pre-conditioning of the fermion force.

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