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Phase transitions of nuclear matter beyond mean field theory

The Cornwall-Jackiw-Tomboulis (CJT) effective action approach is applied to study the phase transition of nuclear matter modeled by the four-nucleon interaction. It is shown that in the Hartree-Fock approximation (HFA) a first-order phase transition takes place at low temperature, whereas the phase transition is of second order at higher temperature. © 2007 The American Physical Society.

 Phat T.H., Anh N.T., Long N.V., Hoa L.V.
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