Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1995-08-16
Nucl.Phys. A596 (1996) 436-450
Physics
Nuclear Physics
Nuclear Theory
20 pages RevTeX and 5 figures (uuencoded .ps-files)
Scientific paper
10.1016/0375-9474(95)00405-X
A general prescription for the construction of $\pi \pi$ interaction potentials which preserve scattering length constraints from chiral symmetry when iterated in scattering equations is derived. The prescription involves only minor modifications of typical meson-exchange models, so that coupling constants and cut-off masses in the models are not greatly affected. Calculations of $s$-wave $\pi \pi$ scattering amplitudes in nuclear matter for two models are compared with those for similar models which violate the chiral constraint. While the prescription tends to suppress the accumulation of the near sub-threshold strength of the $\pi \pi$ interaction, an earlier conjecture that amplitudes which satisfy chiral constraints will not exhibit an instability towards $\pi \pi~s-$wave pair condensation appears to be incorrect. At the same time, however, conventional $\pi \pi$ interaction models which fit scattering data well can readily be adjusted to avoid the instability in nuclear matter without recourse to exotic mechanisms.
Durso J. W.
Rapp Ralf
Wambach Jochen
No associations
LandOfFree
Chirally Constraining the $ππ$ Interaction in Nuclear Matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chirally Constraining the $ππ$ Interaction in Nuclear Matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chirally Constraining the $ππ$ Interaction in Nuclear Matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-155758