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Neutron matter at finite temperature

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Jun 2008Embargo end date: 01 Jan 2007Publisher:Elsevier BVJournal:Nuclear Physics A, volume 806, pages 105-116 (issn: 0375-9474,

Authors: Achim Schwenk; Laura Tolos; Bengt Friman;

doi: 10.1016/j.nuclphysa.2008.02.309 , 10.48550/arxiv.0711.3613

arXiv: http://arxiv.org/abs/0711.3613

Neutron matter at finite temperature

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Abstract

We calculate the neutron matter equation of state at finite temperature based on low-momentum two- and three-nucleon interactions. The free energy is obtained from a loop expansion around the Hartree-Fock energy, including contributions from normal and anomalous diagrams. We focus on densities below saturation density with temperatures T <= 10 MeV and compare our results to the model-independent virial equation of state and to variational calculations. Good agreement with the virial equation of state is found at low density. We provide simple estimates for the theoretical error, important for extrapolations to astrophysical conditions.

15 pages, 6 figures

Related Organizations

Goethe University Frankfurt
Germany
Gustav Stresemann Institute
Germany
Helmholtz Association of German Research Centres
Germany
TRIUMF
Canada
GSI
Germany

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Keywords

Condensed Matter - Other Condensed Matter, Nuclear Theory (nucl-th), Nuclear Theory, Astrophysics (astro-ph), FOS: Physical sciences, Nuclear Experiment (nucl-ex), Astrophysics, Nuclear Experiment, Other Condensed Matter (cond-mat.other)

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	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%