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The nuclear matter equation of state with consistent two- and three-body perturbative chiral interactions
- Source :
- Phys. Rev. C 89, 044321 (2014)
- Publication Year :
- 2014
-
Abstract
- We compute the energy per particle of infinite symmetric nuclear matter from chiral N3LO (next-to-next-to-next-to-leading order) two-body potentials plus N2LO three-body forces. The low-energy constants of the chiral three-nucleon force that cannot be constrained by two-body observables are fitted to reproduce the triton binding energy and the 3H-3He Gamow-Teller transition matrix element. In this way, the saturation properties of nuclear matter are reproduced in a parameter-free approach. The equation of state is computed up to third order in many-body perturbation theory, with special emphasis on the role of the third-order particle-hole diagram. The dependence of these results on the cutoff scale and regulator function is studied. We find that the inclusion of three-nucleon forces consistent with the applied two-nucleon interaction leads to a reduced dependence on the choice of the regulator only for lower values of the cutoff.<br />Comment: 9 pages, 12 figures, 3 tables, to be published in Physical Review C. arXiv admin note: text overlap with arXiv:1209.5537
- Subjects :
- Nuclear Theory
Subjects
Details
- Database :
- arXiv
- Journal :
- Phys. Rev. C 89, 044321 (2014)
- Publication Type :
- Report
- Accession number :
- edsarx.1402.0965
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1103/PhysRevC.89.044321