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QCD vacuum structure in strong magnetic fields

Daniel Kabat·Kimyeong Lee·Erick Weinberg
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Abstract

We study the response of the QCD vacuum to strong magnetic fields, using a potential model for the quark-antiquark interaction. We find that production of spin-polarized u-ubar pairs is energetically favorable for fields B > B_crit \sim 10 GeV^2. We contrast the resulting u-ubar condensate with the quark condensate which is present at zero magnetic field, and we estimate the corresponding magnetization as a function of B.

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Daniel Kabat, Kimyeong Lee, Erick Weinberg. 2002-05-24. QCD vacuum structure in strong magnetic fields. https://doi.org/10.1103/physrevd.66.014004

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