In the Quark-Meson model, analytic continuation from imaginary to real chemical potential reproduces the chiral phase boundary only up to mu_conv about 146 MeV and has about 150 percent error near the critical endpoint.
Solving non-perturbative flow equations
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Non-perturbative exact flow equations describe the scale dependence of the effective average action. We present a numerical solution for an approximate form of the flow equation for the potential in a three-dimensional N-component scalar field theory. The critical behaviour, with associated critical exponents, can be inferred with good accuracy.
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Assessing the Reconstruction of the Critical Line in the QCD Phase Diagram from Imaginary to Real Chemical Potential
In the Quark-Meson model, analytic continuation from imaginary to real chemical potential reproduces the chiral phase boundary only up to mu_conv about 146 MeV and has about 150 percent error near the critical endpoint.