Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1999-02-17
Phys.Rev.Lett. 83 (1999) 1926-1929
Physics
Nuclear Physics
Nuclear Theory
4 pages, 2 figures, using psfig.sty (included)
Scientific paper
10.1103/PhysRevLett.83.1926
Low-density nuclear matter at finite temperature is considered representing the strong coupling situation of a highly correlated fermion system. One-particle se lf-energies and the density of states in the vicinity of the pairing transition point are presented. Within the Green function approach model calculations are p erformed using the thermodynamic $T$ matrix in ladder approximation. As a main r esult the formation of a pseudogap in the level density near the critical temper ature of the pairing phase transition has been found. It is shown that compared to mean field, the picture of the onset of the pairing transition is essentially changed if correlations are taken into account.
Roepke Gerd
Schnell Anneliese
Schuck Peter
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