Journal article

Publication year: 2019

Journal: Physical Review D

Volume number: 100

Issue number: 7

ISSN: 2470-0010

eISSN: 2470-0029

Open access status: Hybrid

DOI Link: https://doi.org/10.1103/PhysRevD.100.074011

Publisher: American Physical Society

Abstract: 
We present results for fluctuations of the baryon number for QCD at nonzero temperature and chemical potential. These are extracted from solutions to a coupled set of truncated Dyson-Schwinger equations for the quark and gluon propagators of Landau-gauge QCD with N-f = 2 + 1 quark flavors, that has been studied previously. We discuss the changes of fluctuations and ratios thereof up to fourth order for several temperatures and baryon chemical potential up to and beyond the critical endpoint. In the context of preliminary STAR data for the skewness and kurtosis ratios, the results are compatible with the scenario of a critical endpoint at large chemical potential and slightly offset from the freeze-out line. We also discuss the caveats involved in this comparison.

Harvard Citation style: Isserstedt, P., Buballa, M., Fischer, C. and Gunkel, P. (2019) Baryon number fluctuations in the QCD phase diagram from Dyson-Schwinger equations, Physical Review D, 100(7), Article 074011. https://doi.org/10.1103/PhysRevD.100.074011

APA Citation style: Isserstedt, P., Buballa, M., Fischer, C., & Gunkel, P. (2019). Baryon number fluctuations in the QCD phase diagram from Dyson-Schwinger equations. Physical Review D. 100(7), Article 074011. https://doi.org/10.1103/PhysRevD.100.074011