Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2005-08-31
Eur.Phys.J.C46:179-189,2006
Physics
High Energy Physics
High Energy Physics - Lattice
14 pages
Scientific paper
10.1140/epjc/s2005-02462-y
We analyze the dependence of heavy quark free energies on the baryon chemical potential (mu_b) in 2-flavour QCD using improved (p4) staggered fermions with a bare quark mass of m/T = 0.4. By performing a 6th order Taylor expansion in the chemical potential which circumvents the sign problem. The Taylor expansion coefficients of colour singlet and colour averaged free energies are calculated and from this the expansion coefficients for the corresponding screening masses are determined. We find that for small mu_b the free energies of a static quark anti-quark pair decrease in a medium with a net excess of quarks and that screening is well described by a screening mass which increases with increasing mu_b. The mu_b-dependent corrections to the screening masses are well described by perturbation theory for T > 2 T_c. In particular, we find for all temperatures above T_c that the expansion coefficients for singlet and colour averaged screening masses differ by a factor 2.
Döring M.
Ejiri Shinji
Kaczmarek Olaf
Karsch Frithjof
Laermann Edwin
No associations
LandOfFree
Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential 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 Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-151955