Complex Langevin dynamics in the SU(3) spin model at nonzero chemical potential revisited

Details Complex Langevin dynamics in the SU(3) spin model at nonzero chemical potential revisited Complex Langevin dynamics in the SU(3) spin model at nonzero chemical potential revisited

2011-12-20

arxiv.org/abs/1112.4655v2

Physics

High Energy Physics

High Energy Physics - Lattice

23 pages, several figures, minor typos corrected, to appear in JHEP

Scientific paper

The three-dimensional SU(3) spin model is an effective Polyakov loop model for QCD at nonzero temperature and density. It suffers from a sign problem at nonzero chemical potential. We revisit this model using complex Langevin dynamics and assess in particular the justification of this approach, using analyticity at small mu^2 and the criteria for correctness developed recently. Finite-stepsize effects are discussed in some detail and a higher-order algorithm is employed to eliminate leading stepsize corrections. Our results strongly indicate that complex Langevin dynamics is reliable in this theory in both phases, including the critical region. This is in sharp contrast to the case of the XY model, where correct results were obtained in only part of the phase diagram.

Affiliated with

Also associated with

No associations

Rating

Complex Langevin dynamics in the SU(3) spin model at nonzero chemical potential revisited does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Complex Langevin dynamics in the SU(3) spin model at nonzero chemical potential revisited, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Complex Langevin dynamics in the SU(3) spin model at nonzero chemical potential revisited will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-56191