Neutron matter from chiral two- and three-nucleon calculations up to N3LO

2016/08/31 by C. Drischler, A. Carbone, Arianna Carbone +2 · 4 citations
Physics and Astronomy · #Chiral perturbation theory #Convergence (economics) #Ideal (ethics) #Mathematical physics #Neutron #Nuclear matter #Nuclear physics #Nuclear physics research studies #Nucleon #Perturbation theory (quantum mechanics) #Physics #Pulsars and Gravitational Waves Research #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum mechanics #Statistical physics #astro-ph.HE #nucl-th

paper · pdf · doi:10.1103/physrevc.94.054307

published as Phys. Rev. C 94, 054307 (2016) · minor changes, published version

openalex created_date 2016/09/16 · openalex publication_date 2016/11/08 · arxiv created 2016/12/09 · arxiv updated 2016/12/12 · openalex updated_date 2026/08/05

Abstract

Neutron matter is an ideal laboratory for nuclear interactions derived from chiral effective field theory since all contributions are predicted up to next-to-next-to-next-to-leading order (N³LO) in the chiral expansion. By making use of recent advances in the partial-wave decomposition of three-nucleon (3N) forces, we include for the first time N³LO 3N interactions in many-body perturbation theory (MBPT) up to third order and in self-consistent Green's function theory (SCGF). Using these two complementary many-body frameworks we provide improved predictions for the equation of state of neutron matter at zero temperature and also analyze systematically the many-body convergence for different chiral EFT interactions. Furthermore, we present an extension of the normal-ordering framework to finite temperatures. These developments open the way to improved calculations of neutron-rich matter including estimates of theoretical uncertainties for astrophysical applications.

Citations

• Accurate nuclear radii and binding energies from a chiral interaction
• Density-dependent effective nucleon-nucleon interaction from chiral three-nucleon forces
• Hot neutron matter from a self-consistent Green's-functions approach
• Coupled-cluster computations of atomic nuclei
• Efficient calculation of chiral three-nucleon forces up toN3LOforab initiostudies
• Self-consistent Green's function method for nuclei and nuclear matter
• Modern theory of nuclear forces
• Chiral effective field theory and nuclear forces
• Asymmetric nuclear matter based on chiral two- and three-nucleon interactions
• The In-Medium Similarity Renormalization Group: A Novel Ab Initio Method for Nuclei

Cited by

• High-quality two-nucleon potentials up to fifth order of the chiral expansion
• nEoS: neutron star equation of state from hadron physics alone
• The Equation of State of Neutron-Rich Matter at Fourth Order of Chiral Effective Field Theory and the Radius of a Medium-Mass Neutron Star
• Weinberg eigenvalues for chiral nucleon-nucleon interactions