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Relativity Damps OPEP in Nuclear Matter | | Manoj K. Banerjee
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18 Jun 1998 | | Journal: | Acta Phys.Polon. B29 (1998) 2509-2518 | | Subject: | nucl-th | | Affiliation: | University of Maryland | | Abstract: | Using a relativistic Dirac-Brueckner analysis the OPEP contribution to the ground state energy of nuclear matter is studied. In the study the pion is derivative-coupled. We find that the role of the tensor force in the saturation mechanism is substantially reduced compared to its dominant role in a usual nonrelativistic treatment. We show that the damping of derivative-coupled OPEP is actually due to the decrease of $M^*/M$ with increasing density. We point out that if derivative-coupled OPEP is the preferred form of nuclear effective lagrangian nonrelativistic treatment of nuclear matter is in trouble. Lacking the notion of $M^*$ it cannot replicate the damping. We suggest an examination of the feasibility of using pseudoscalar coupled $pi$N interaction before reaching a final conclusion about nonrelativistic treatment of nuclear matter. | | Source: | arXiv, nucl-th/9806054 | | Services: | Forum | Review | PDF | Favorites | |
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