Lattice QCD Equation of State at Finite Chemical Potential from an Alternative Expansion Scheme

被引:87
作者
Borsanyi, S. [1 ]
Fodor, Z. [1 ,2 ,3 ,4 ]
Guenther, J. N. [5 ]
Kara, R. [1 ]
Katz, S. D. [6 ]
Parotto, P. [1 ]
Pasztor, A. [6 ]
Ratti, C. [7 ]
Szabo, K. K. [1 ,4 ]
机构
[1] Univ Wuppertal, Dept Phys, D-42119 Wuppertal, Germany
[2] Penn State Univ, Dept Phys, State Coll, PA 16801 USA
[3] Eotvos Lorand Univ, Inst Theoret Phys, Pazmany Peter Setany 1-A, H-1117 Budapest, Hungary
[4] Forschungszentrum Julich, Julich Supercomp Ctr, D-52425 Julich, Germany
[5] Aix Marseille Univ, Univ Toulon, CPT, CNRS, Marseille, France
[6] Eotvos Lorand Univ, H-1117 Budapest, Hungary
[7] Univ Houston, Dept Phys, Houston, TX 77204 USA
基金
美国国家科学基金会;
关键词
PHASE-DIAGRAM; TRANSITION;
D O I
10.1103/PhysRevLett.126.232001
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
In this Letter, we introduce a novel scheme for extrapolating the equation of state of QCD to finite chemical potential that features considerably improved convergence properties and allows us to extend its reach to unprecedentedly high baryonic chemical potentials. We present continuum extrapolated lattice results for the new expansion coefficients and show the thermodynamic observables up to mu(B)/T <= 3.5. This novel expansion does not suffer from the shortcomings that characterize the traditional Taylor expansion method, such as difficulties inherent in performing such an expansion with a limited number of coefficients and the poor signal-to-noise ratio that affects Taylor coefficients determined from lattice calculations.
引用
收藏
页数:7
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