Abstract
The possibility of bound two-pion (Cooper) pairs in a nuclear medium and their eventual Bose condensation is pointed out. This stems from the fact that freeπ —π scattering in theI=0,l=0 channel shows attraction and that the kinetic energy is strongly suppressed in matter through coupling to Δ —h intermediate states. Connections to theσ meson in effective field theories for nuclear matter are discussed.
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Schuck, P., Nörenberg, W. & Chanfray, G. Bound two-pion Cooper pairs in nuclei?. Z. Physik A - Atomic Nuclei 330, 119–120 (1988). https://doi.org/10.1007/BF01287274
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DOI: https://doi.org/10.1007/BF01287274