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Medium modification of the pion-pion interaction at finite density

Abstract : We discuss medium modifications of the unitarized pion-pion interaction in the nuclear medium. We incorporate both the effects of chiral symmetry restoration and the influence of collective nuclear pionic modes originating from the p-wave coupling of the pion to delta-hole configurations. We show in particular that the dropping of the sigma meson mass significantly enhances the low energy structure created by the in-medium collective pionic modes.
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http://hal.in2p3.fr/in2p3-00007652
Contributor : Sylvie Flores <>
Submitted on : Friday, January 26, 2001 - 3:31:16 PM
Last modification on : Tuesday, November 19, 2019 - 2:46:30 AM

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  • HAL Id : in2p3-00007652, version 1

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D. Davesne, Y.J. Zhang, G. Chanfray. Medium modification of the pion-pion interaction at finite density. Physical Review C, American Physical Society, 2000, 62, pp.024604-1-024604-10. ⟨in2p3-00007652⟩

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