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

V. Vovchenko; J. Steinheimer; O. Philipsen; A. Pásztor; Z. Fodor; S. D. Katz; H. Stoecker

doi:10.1016/j.nuclphysa.2018.10.068

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

V. Vovchenko, J. Steinheimer, O. Philipsen, A. Pásztor, Z. Fodor, S. D. Katz, H. Stoecker

Physics

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

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 μ_B, as the only model input and permits a closed analytic form. Excellent description of the available lattice data at both μ_B = 0 and at imaginary μ_B is obtained. We also demonstrate how the Fourier coefficients can be reconstructed from baryon number susceptibilities.

Original language	English (US)
Pages (from-to)	859-862
Number of pages	4
Journal	Nuclear Physics A
Volume	982
DOIs	https://doi.org/10.1016/j.nuclphysa.2018.10.068
State	Published - Feb 2019

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.nuclphysa.2018.10.068

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abstract = "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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T1 - Lattice-based QCD equation of state at finite baryon density

T2 - Cluster Expansion Model

AU - Vovchenko, V.

AU - Steinheimer, J.

AU - Philipsen, O.

AU - Pásztor, A.

AU - Fodor, Z.

AU - Katz, S. D.

AU - Stoecker, H.

PY - 2019/2

Y1 - 2019/2

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AB - 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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SP - 859

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JO - Nuclear Physics A

JF - Nuclear Physics A

ER -

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

Abstract

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