swave ππ correlations in dense nuclear matter
Abstract
The swave correlated ππ strength distribution in cold nuclear matter is investigated. The inmedium single pions are renormalized by means of the usual pwave couplings to nucleons and Δ's. Two groups of models for the ππ interaction are studied. The first one uses phenomenological models which reproduce the phase shifts but do not respect the softpion theorems. With increasing density a strong accumulation of strength in the subthreshold region is observed. Slightly above saturation density there even occurs an instability with respect to swave ππ pair condensation. These effects are strongly moderated or disappear altogether if constraints from chiral symmetry are built into the ππ interaction.
 Publication:

Nuclear Physics A
 Pub Date:
 February 1995
 DOI:
 10.1016/03759474(94)00429Q
 arXiv:
 arXiv:nuclth/9406010
 Bibcode:
 1995NuPhA.581..471A
 Keywords:

 Nuclear Theory
 EPrint:
 22 pages, LATEX, 12 figures (not included, available from the authors), KFAIKP(TH)199421