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arXiv · hep-lat/0307007

Analyticity and the phase diagram of QCD

Sourendu Gupta
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Abstract

Some consequences of the analyticity of the free energy (pressure) of QCD at finite chemical potential are deduced. These include a method for numerical exploration of the full phase diagram by a novel use of simulations at imaginary chemical potential to extract Yang-Lee zeroes of the grand-canonical partition function. We make use of, and comment on, CPT symmetries, positivity of non-linear susceptibilities and the finiteness of screening lengths. We also comment on the structure of zeroes expected for the usual picture of the phases of QCD, following a discussion of the physics of imaginary chemical potential.

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Sourendu Gupta. 2003-07-31. Analyticity and the phase diagram of QCD. https://doi.org/10.1016/j.physletb.2004.03.018

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