Effective nucleon-nucleon interactions and nuclear matter equation of state |
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Authors: | K.C. Chung C.S. Wang A.J. Santiago J.W. Zhang |
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Affiliation: | (1) Departamento de Física Nuclear e Altas Energias, Instituto de Física, Universidade do Estado do Rio de Janeiro, Rio de Janeiro-RJ 20559-900, Brazil, BR;(2) Department of Technical Physics, Peking University, Beijing 100871, China, CN |
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Abstract: | Nuclear matter equations of state based on Skyrme, Myers-Swiatecki and Tondeur interactions are written as polynomials of the cubic root of density, with coefficients that are functions of the relative neutron excess δ. In the extrapolation toward states far away from the standard one, it is shown that the asymmetry dependence of the critical point ( ,) depends on the model used. However, when the equations of state are fitted to the same standard state, the value of is almost the same in Skyrme and in Myers-Swiatecki interactions, while is much lower in Tondeur interaction. Furthermore, does not depend sensitively on the choice of the parameter γ in Skyrme interaction. Received: 5 May 2000 / Accepted: 16 January 2001 |
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Keywords: | PACS. 21.65.+f Nuclear matter – 21.30.Fe Forces in hadronic systems and effective interactions |
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