The finite-temperature one-pion exchange potential with vertices corrections
- 1 January 1993
- journal article
- Published by IOP Publishing in Journal of Physics G: Nuclear and Particle Physics
- Vol. 19 (1) , 79-86
- https://doi.org/10.1088/0954-3899/19/1/005
Abstract
The temperature effects of the three-line vertices graph on the one-pion exchange potential (OPEP) with the pseudoscalar and pseudovector couplings is investigated using the method of Matsubara imaginary-time Green function. It is found that the effective coupling of nucleon-nucleon-pion (NN pi ) decreases with temperature and drops rapidly at high temperature. At a critical temperature Tc, the effective NN pi coupling diminishes to zero and the one-pion exchange potential vanishes. Tc is determined to be 215 MeV. OPEP with both mass and vertices corrections are obtained.Keywords
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