COLLECTIVE CORRELATION BETWEEN VACUUM NUCLEONS IN PS-PS MESON THEORY
The effect of the collective correlation between vacuuna nucleons is calculated using an approximation in which the kinetic energy of the nucleons is neglected as compared with their rest energy. The point is that there can exist a strong collective correlation between vacuum nucleons just as between electrons in metal, since interactions between vacuum nucleons due to pions are dominantly attractive. It is shown that this effect can play in fact an importunt role, if this attractive interaction is sifficiently strong, and that the low energy behavior of the phase shift sigma 3 of the S-wave pion-nucleon scattering and the position of the (33) resonance are rather sensitive to this effect. As an example, the phase shift sigma 3 is calculated using a Tamm-Dancoff approximation including up to two pions and one nucleonantinucleon pair. It is shown that the result agrees reasonably well with experiment if parameters specifying the strength and the range of the attractive potential are chosen suitably. (auth)
- Research Organization:
- Univ. of Minnesota, Minneapolis
- NSA Number:
- NSA-15-025406
- OSTI ID:
- 4017509
- Journal Information:
- Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 25
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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