Darmstadt 2016 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 36: Structure and Dynamics of Nuclei VIII
HK 36.1: Group Report
Wednesday, March 16, 2016, 14:00–14:30, S1/01 A03
Applications of chiral three-nucleon forces up to N3LO to nuclear matter — •Christian Drischler1,2, Kai Hebeler1,2, and Achim Schwenk1,2 — 1Institut für Kernphysik, Technische Universität Darmstadt — 2ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH
We have developed recently an improved method for including normal-ordered three-nucleon (3N) forces to many-body calculations of nuclear matter. Applying these density-dependent effective two-body forces to matter of arbitrary proton fractions we show results for the equation of state based on chiral N3LO two- and N2LO three-body forces up second order and study the symmetry energy including contributions beyond the quadratic expansion. As our method allows to incorporate also the recent developed matrix elements of the subleading three-body forces we show in addition results for consistent N3LO calculations of pure neutron matter at zero temperature.
Furthermore, these advances in treating chiral 3N forces up to N3LO can directly be used for advanced studies of properties of neutron matter, such as the equation of state based on the nonperturbative approach of self-consistent Green’s functions or the 3PF2 BCS energy gap. We show first results for these.
*This work is supported by the ERC Grant No. 307986 STRONGINT.