dorsal/arxiv
View SchemaThe entropy of a correlated system of nucleons
| Authors | Arnau Rios, Artur Polls, Angels Ramos, Herbert Müther |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0605080 |
| URL | https://arxiv.org/abs/nucl-th/0605080 |
| DOI | 10.1103/PhysRevC.74.054317 |
| Journal | Phys.Rev. C74 (2006) 054317 |
Abstract
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.
{
"annotation_id": "3a5b0360-2fa7-4a52-8b88-c8fe1e547348",
"date_created": "2026-03-02T18:00:07.629000Z",
"date_modified": "2026-03-02T18:00:07.629000Z",
"file_hash": "a29d29d47649414a07947f5d96be94bdee7611cc9088113f4bbe5cee66d4e40b",
"private": false,
"record": {
"abstract": "Realistic nucleon-nucleon interaction induce correlations to the nuclear\nmany-body system which lead to a fragmentation of the single-particle strength\nover a wide range of energies and momenta. We address the question of how this\nfragmentation affects the thermodynamical properties of nuclear matter. In\nparticular, we show that the entropy can be computed with the help of a\nspectral function which can be evaluated in terms of the self-energy obtained\nin the Self-Consistent Green\u0027s Function approach. Results for the density and\ntemperature dependences of the entropy per particle for symmetric nuclear\nmatter are presented and compared to the results of lowest order finite\ntemperature Brueckner--Hartree--Fock calculations. The effects of correlations\non the calculated entropy are small, if the appropriate quasi-particle\napproximation is used. The results demonstrate the thermodynamical consistency\nof the self-consistent T-matrix approximation for the evaluation of the Green\u0027s\nfunctions.",
"arxiv_id": "nucl-th/0605080",
"authors": [
"Arnau Rios",
"Artur Polls",
"Angels Ramos",
"Herbert M\u00fcther"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.74.054317",
"journal_ref": "Phys.Rev. C74 (2006) 054317",
"title": "The entropy of a correlated system of nucleons",
"url": "https://arxiv.org/abs/nucl-th/0605080"
},
"schema_id": "dorsal/arxiv",
"source": {
"execution_id": "9c046714-3fa8-4bde-981a-ba40e959f8a1",
"id": "arXiv Dataset IDs",
"type": "Model",
"variant": "snapshot-2026-03-01",
"version": "0.1.0"
},
"user_id": 1000002
}