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Model proposes quark-antiquark interactions in Minkowski space, revealing implications for chiral symmetry.
Weproposeamodelforthequark-antiquarkinteractioninMinkowskispace using the Covariant Spectator Theory. We show that with an equal-weighted scalar- pseudoscalar structure for the confining part of our interaction kernel the axial-vector Ward-Takahashi identity is preserved and our model complies with the Adler-zero con- straint for π-π-scattering imposed by chiral symmetry.
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Biernat et al. (2016) studied this question.
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