Comment on "Taming the pion cloud of the nucleon"

Abstract

In a recent Letter, Alberg and Miller presented a calculation of the pion contributions to the self-energy of the nucleon computed from a pseudoscalar (PS) pion-nucleon interaction, with the claim that the result would be equivalent to that with the pseudovector (PV) form. We demonstrate that the PV and PS pion-nucleon couplings do in fact lead to different results for the self-energy. In particular, for the model-independent, leading nonanalytic behavior of the self-energy, the PV theory yields the well-known m_π^3 dependence in the chiral limit, while the PS interaction involves an additional, lower-order term ~ m_π^2 log(m_π^2).

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References in corpus (1)

• Pion momentum distributions in the nucleon in chiral effective theory

Cited by in corpus (6)

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• Consistency of the light-front quark model with chiral symmetry in the pseudoscalar meson analysis
• Anatomy of relativistic pion loop corrections to the electromagnetic nucleon coupling
• Octet and decuplet baryon self-energies in relativistic SU(3) chiral effective theory