Quark-antiquark Scattering Phase Shift and Meson Spectral Function in Pion Superfluid
classification
✦ hep-ph
nucl-th
keywords
functionmesonphasepionscatteringshiftspectralsuperfluid
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We study the quark-antiquark scattering phase shift and meson spectral function in the pion superfluid described by the Nambu--Jona-Lasinio model. The meson mixing in the pion superfluid changes dramatically the full scattering phase shift and spreads strongly the spectral function of some of the collective modes.
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