%0 Journal Article
%A Petschauer, Stefan
%A Haidenbauer, Johann
%A Kaiser, Norbert
%A Meißner, Ulf-G.
%A Weise, Wolfram
%T Density-dependent effective baryon–baryon interaction from chiral three-baryon forces
%J Nuclear physics  / A
%V 957
%@ 0375-9474
%C Amsterdam
%I North-Holland Publ. Co.
%M FZJ-2016-06215
%P 347 - 378
%D 2017
%X A density-dependent effective potential for the baryon–baryon interaction in the presence of the (hyper)nuclear medium is constructed, based on the leading (irreducible) three-baryon forces derived within SU(3) chiral effective field theory. We evaluate the contributions from three classes: contact terms, one-pion exchange and two-pion exchange. In the strangeness-zero sector we recover the known result for the in-medium nucleon–nucleon interaction. Explicit expressions for the ΛN in-medium potential in (asymmetric) nuclear matter are presented. Our results are suitable for implementation into calculations of (hyper)nuclear matter. In order to estimate the low-energy constants of the leading three-baryon forces we introduce the decuplet baryons as explicit degrees of freedom and construct the relevant terms in the minimal non-relativistic Lagrangian. With these, the constants are estimated through decuplet saturation. Utilizing this approximation we provide numerical results for the effect of the three-body force in symmetric nuclear matter and pure neutron matter on the ΛN interaction. A moderate repulsion that increases with density is found in comparison to the free ΛN interaction.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000390830600026
%R 10.1016/j.nuclphysa.2016.09.010
%U https://juser.fz-juelich.de/record/820958