Friday, April 12, 2013

1304.3247 (E. Laermann et al.)

Making the most of Taylor expansion and imaginary chemical potential    [PDF]

E. Laermann, F. Meyer, M. P. Lombardo
We present preliminary results for the curvature of the pseudocritical line and susceptibilities in Nf = 2 + 1 flavor QCD. The computations are carried out on lattice sizes of 16x16x16x4, at matching parameters of early work of the Bielefeld group. Emphasis is placed on the control of systematic errors, by cross-validating results obtained by use of the Taylor expansion and measurements at imaginary chemical potential. To this end, we generalize the magnetic equation of state to the analysis of the number density, and we extend it to imaginary values of the chemical potential.
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