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arXiv · 1608.06773

Low-energy relation for the trace of the energy-momentum tensor in QCD and the gluon condensate in a magnetic field

N. O. Agasian
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Abstract

A treatment is given of the nonperturbative QCD vacuum in a magnetic field. The low-energy equation for the trace of the energy-momentum tensor in a magnetic field is derived. It is shown that the derivatives with respect to a magnetic field of the quark and gluon contributions to the trace of the energy-momentum tensor are equal. The dependence of the gluon condensate on the magnetic field strength is derived both for strong and weak fields.

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N. O. Agasian. 2016-08-24. Low-energy relation for the trace of the energy-momentum tensor in QCD and the gluon condensate in a magnetic field. https://doi.org/10.1134/s002136401614006x

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