Implementing Chiral Three-Body Forces in Terms of Medium-Dependent Two-Body Forces
| Pub type: | Article |
| Citation: | JeremyWHolt_FIP_v8_p100 |
| Status: | Published |
| Journal: | Frontiers in Physics |
| Volume: | 8 |
| Year: | 2020 |
| Month: | Apr |
| Pages: | 100 |
| Publisher: | Frontiers Media {SA} |
| URL: | https://www.frontiersin.org/ar... |
| DOI: | 10.3389/fphy.2020.00100 |
| Abstract: | Three-nucleon (3N) forces are an indispensable ingredient for accurate few-body and many-body nuclear structure and reaction theory calculations. While the direct implementation of chiral 3N forces can be technically very challenging, a simpler approach is given by employing instead a medium-dependent NN interaction Vmed that reflects the physics of three-body forces at the two-body normal-ordered approximation. We review the derivation and construction of Vmed from the chiral 3N interaction at next-to-next-to-leading order (N2LO), consisting of a long-range 2π-exchange term, a mid-range 1π-exchange component, and a short-range contact-term. Several applications of Vmed to the equation of state of cold nuclear and neutron matter, the nucleon single-particle potential in nuclear matter, and the nuclear quasiparticle interaction are discussed. We also explore differences in using local vs. non-local regulating functions on 3N forces and make direct comparisons to exact results at low order in perturbation theory expansions for the equation of state and single-particle potential. We end with a discussion and numerical calculation of the in-medium NN potential Vmed from the next-to-next-to-next-to-leading order (N3LO) chiral 3N force, which consists of a series of long-range and short-range terms. |
| Month_val: | 4 |
| Sig contrib: | J. W. Holt |
| Authors: | |
| Added by: | [DGM] |
| Total mark: | 0 |
| | |
|
Notes
|
|
|
|
|
|
Topics
|
|
|
|
