Journal article

Publication year: 2021

Journal: Physical Review D

Volume number: 104

Issue number: 7

ISSN: 2470-0010

eISSN: 2470-0029

Open access status: Hybrid

DOI Link: https://doi.org/10.1103/PhysRevD.104.074035

Publisher: American Physical Society

Abstract: 
We investigate the impact of finite volume and the corresponding restrictions on long-range correlations on the location of the critical endpoint in the QCD phase diagram. To this end, we employ a sophisticated combination of lattice Yang-Mills theory and a (truncated) version of Dyson-Schwingcr equations in Landau gauge for 2 + 1 quark flavors that has been studied extensively in the past. In the infinite-volume limit, this system predicts a critical endpoint at moderate temperature and large chemical potential. We study this system at small and intermediate volumes and determine the dependence of the location of the critical endpoint on the boundary conditions and the volume of a three-dimensional cube with edge length L. We demonstrate that noticeable volume effects of more than five percent occur only for L less than or similar to 5 fm and that volumes as large as L-3 greater than or similar to (8 fm)(3) are very close to the infinite-volume limit.

Harvard Citation style: Bernhardt, J., Fischer, C., Isserstedt, P. and Schaefer, B. (2021) Critical endpoint of QCD in a finite volume, Physical Review D, 104(7), Article 074035. https://doi.org/10.1103/PhysRevD.104.074035

APA Citation style: Bernhardt, J., Fischer, C., Isserstedt, P., & Schaefer, B. (2021). Critical endpoint of QCD in a finite volume. Physical Review D. 104(7), Article 074035. https://doi.org/10.1103/PhysRevD.104.074035