Lattice-based QCD equation of state at finite baryon density: Cluster Expansion Model

  • The QCD equation of state at finite baryon density is studied in the framework of a Cluster Expansion Model (CEM), which is based on the fugacity expansion of the net baryon density. The CEM uses the two leading Fourier coefficients, obtained from lattice simulations at imaginary μB, as the only model input and permits a closed analytic form. Excellent description of the available lattice data at both μB = 0 and at imaginary μB is obtained. We also demonstrate how the Fourier coefficients can be reconstructed from baryon number susceptibilities.

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Author:Volodymyr VovchenkoORCiDGND, Jan SteinheimerORCiDGND, Owe PhilipsenORCiDGND, Attila PásztorORCiD, Zoltán FodorORCiDGND, Sandor D. KatzORCiD, Horst StöckerORCiDGND
Parent Title (English):Nuclear Physics A
Place of publication:Amsterdam
Document Type:Article
Date of Publication (online):2019/01/22
Date of first Publication:2019/01/22
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2023/10/09
Tag:QCD equation of state; cluster expansion model; finite baryon density
Page Number:4
First Page:859
Last Page:862
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International