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arXiv · hep-lat/0209084

QCD phase diagram for small densities from simulations at imaginary mu

P. de Forcrand·O. Philipsen
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Abstract

We present results on the QCD phase diagram for small densities without reweighting. Our simulations are performed with an imaginary chemical potential mu_I for which the fermion determinant is positive. On an 8^3x4 lattice with 2 flavors of staggered quarks, we map out the pseudo-critical temperature T_c(mu_I). For mu_I/T < pi/3, this is an analytic function whose Taylor expansion converges rapidly, with truncation errors smaller than statistical ones. The result is analytically continued to give the location of the pseudo-critical line for real mu_B<500 MeV.

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P. de Forcrand, O. Philipsen. 2002-09-06. QCD phase diagram for small densities from simulations at imaginary mu. https://doi.org/10.1016/s0920-5632(03)01607-4

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