Abstract
We study the \( q\overline{q} \) structure embedded in chiral mesons in response to external magnetic fields (m.f.), using the chiral Lagrangian with \( q\overline{q} \) degrees of freedom derived earlier. We show that GMOR relations hold true for neutral chiral mesons, while they are violated for the charged ones for eB > σ = 0.2GeV2. The standard chiral perturbation theory also fails in this region. Masses of π + and π 0 mesons are calculated and compared to lattice data.
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ArXiv ePrint: 1306.2232
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Orlovsky, V., Simonov, Y. Nambu-Goldstone mesons in strong magnetic field. J. High Energ. Phys. 2013, 136 (2013). https://doi.org/10.1007/JHEP09(2013)136
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DOI: https://doi.org/10.1007/JHEP09(2013)136