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Gauge-invariant field-strength correlators for QCD in a magnetic background

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arxiv 1510.07012 v2 pith:LWDKQYUX submitted 2015-10-23 hep-lat hep-phhep-th

Massimo D'Elia , Enrico Meggiolaro , Michele Mesiti , Francesco Negro This is my paper · ORCID
classification hep-lathep-phhep-th
keywords correlatorsmagneticbackgroundfieldgauge-invariantanalysisanisotropiescase
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abstract

We consider the properties of the gauge-invariant two-point correlation functions of the gauge-field strengths for QCD in the presence of a magnetic background field. We discuss the general structure of the correlators in this case and provide the results of an exploratory lattice study for $N_f = 2$ QCD discretized with unimproved staggered fermions. Our analysis provides evidence for the emergence of anisotropies in the non-perturbative part of the correlators and for an increase of the gluon condensate as a function of the external magnetic field.

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  1. Dense Quark-Gluon Plasma in strong magnetic fields

    hep-ph 2019-08 conditional novelty 6.0 of 10

    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.

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