Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential

Doering M, Ejiri S, Kaczmarek O, Karsch F, Laermann E (2006)
European Physical Journal C 46(1): 179-189.

Journal Article | Published | English

No fulltext has been uploaded

Author
Abstract
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.
Publishing Year
ISSN
eISSN
PUB-ID

Cite this

Doering M, Ejiri S, Kaczmarek O, Karsch F, Laermann E. Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential. European Physical Journal C. 2006;46(1):179-189.
Doering, M., Ejiri, S., Kaczmarek, O., Karsch, F., & Laermann, E. (2006). Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential. European Physical Journal C, 46(1), 179-189.
Doering, M., Ejiri, S., Kaczmarek, O., Karsch, F., and Laermann, E. (2006). Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential. European Physical Journal C 46, 179-189.
Doering, M., et al., 2006. Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential. European Physical Journal C, 46(1), p 179-189.
M. Doering, et al., “Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential”, European Physical Journal C, vol. 46, 2006, pp. 179-189.
Doering, M., Ejiri, S., Kaczmarek, O., Karsch, F., Laermann, E.: Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential. European Physical Journal C. 46, 179-189 (2006).
Doering, M., Ejiri, S., Kaczmarek, Olaf, Karsch, Frithjof, and Laermann, Edwin. “Screening of heavy quark free energies at finite temperature and non-zero baryon chemical potential”. European Physical Journal C 46.1 (2006): 179-189.
This data publication is cited in the following publications:
This publication cites the following data publications:

Export

0 Marked Publications

Open Data PUB

Web of Science

View record in Web of Science®

Sources

arXiv hep-lat/0509001

Inspire 691205

Search this title in

Google Scholar