Analytic expressions for quark pressure and magnetic susceptibility of dense quark-gluon plasma in strong magnetic fields are derived within the Field Correlator Method, predicting strong paramagnetism.
Magnetic susceptibility in QCD
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abstract
Magnetic susceptibility in the deconfined phase of QCD is calculated in a closed form using a recent general expression for the quark gas pressure in magnetic field. Quark selfenergies are entering the result via Polyakov line factors and ensure the total paramagnetic effect, increasing with temperature. A generalized form of magnetic susceptibility in nonzero magnetic field suitable for experimental and lattice measurements is derived, showing a good agreement with available lattice data.
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Dense Quark-Gluon Plasma in strong magnetic fields
Analytic expressions for quark pressure and magnetic susceptibility of dense quark-gluon plasma in strong magnetic fields are derived within the Field Correlator Method, predicting strong paramagnetism.