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The entropy of a correlated system of nucleons

Rios, A, Polls, A, Ramos, A and Müther, H (2006) The entropy of a correlated system of nucleons Phys.Rev. C, 74.

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Realistic nucleon-nucleon interaction induce correlations to the nuclear many-body system which lead to a fragmentation of the single-particle strength over a wide range of energies and momenta. We address the question of how this fragmentation affects the thermodynamical properties of nuclear matter. In particular, we show that the entropy can be computed with the help of a spectral function which can be evaluated in terms of the self-energy obtained in the Self-Consistent Green's Function approach. Results for the density and temperature dependences of the entropy per particle for symmetric nuclear matter are presented and compared to the results of lowest order finite temperature Brueckner--Hartree--Fock calculations. The effects of correlations on the calculated entropy are small, if the appropriate quasi-particle approximation is used. The results demonstrate the thermodynamical consistency of the self-consistent T-matrix approximation for the evaluation of the Green's functions.

Item Type: Article
Divisions : Surrey research (other units)
Authors : Rios, A, Polls, A, Ramos, A and Müther, H
Date : 30 May 2006
DOI : 10.1103/PhysRevC.74.054317
Uncontrolled Keywords : nucl-th, nucl-th
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:05
Last Modified : 24 Jan 2020 23:25

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