Temperature effects on the neutron matter equation of state obtained from chiral effective field theory
Abstract
Temperature effects on the neutron matter equation of state (EoS) are investigated in the framework of chiral effective field theory. Recently, state-of-the-art chiral two-nucleon forces are applied from third to fifth order in the chiral expansion together with chiral three-nucleon forces, allowing for a determination of the truncation error of the theoretical predictions. The thermodynamic quantities considered include the chemical potential, the internal energy, the entropy, and the free energy. In general, good order-by-order convergence of all predictions is observed. As to be expected, temperature effects are largest at low density. Finally, the temperature dependence of the chiral three-nucleon force turns out to be weak.
- Publication Date:
- Research Org.:
- Univ. of Idaho, Moscow, ID (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1656840
- Grant/Contract Number:
- FG02-03ER41270
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Modern Physics Letters A
- Additional Journal Information:
- Journal Volume: 35; Journal Issue: 19; Journal ID: ISSN 0217-7323
- Publisher:
- World Scientific Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; neutron matter; equation of state; temperature effects; chiral effective field theory
Citation Formats
Sammarruca, Francesca, Machleidt, R., and Millerson, R. Temperature effects on the neutron matter equation of state obtained from chiral effective field theory. United States: N. p., 2020.
Web. doi:10.1142/s0217732320501564.
Sammarruca, Francesca, Machleidt, R., & Millerson, R. Temperature effects on the neutron matter equation of state obtained from chiral effective field theory. United States. https://doi.org/10.1142/s0217732320501564
Sammarruca, Francesca, Machleidt, R., and Millerson, R. Wed .
"Temperature effects on the neutron matter equation of state obtained from chiral effective field theory". United States. https://doi.org/10.1142/s0217732320501564. https://www.osti.gov/servlets/purl/1656840.
@article{osti_1656840,
title = {Temperature effects on the neutron matter equation of state obtained from chiral effective field theory},
author = {Sammarruca, Francesca and Machleidt, R. and Millerson, R.},
abstractNote = {Temperature effects on the neutron matter equation of state (EoS) are investigated in the framework of chiral effective field theory. Recently, state-of-the-art chiral two-nucleon forces are applied from third to fifth order in the chiral expansion together with chiral three-nucleon forces, allowing for a determination of the truncation error of the theoretical predictions. The thermodynamic quantities considered include the chemical potential, the internal energy, the entropy, and the free energy. In general, good order-by-order convergence of all predictions is observed. As to be expected, temperature effects are largest at low density. Finally, the temperature dependence of the chiral three-nucleon force turns out to be weak.},
doi = {10.1142/s0217732320501564},
journal = {Modern Physics Letters A},
number = 19,
volume = 35,
place = {United States},
year = {Wed May 13 00:00:00 EDT 2020},
month = {Wed May 13 00:00:00 EDT 2020}
}
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