English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

The long-range terms of the subleading chiral three-nucleon force [publishedin Phys.\,Rev.\,C77, 064004 (2008)] are specified to the case of threeneutrons. From these $3n$-interactions an effective density-dependentneutron-neutron potential $V_\text{med}$ in pure neutron matter is derived.Following the division of the pertinent 3n-diagrams into two-pion exchange,two-pion-one-pion exchange and ring topology, all self-closings andconcatenations of two neutron-lines to an in-medium loop are evaluated. Themomentum and $k_n$-dependent potentials associated with the spin-operators$1,\, \vec\sigma_1\!\cdot\!\vec\sigma_2,\, \vec\sigma_1\!\cdot\!\vec q\,\vec\sigma_2\!\cdot\!\vec q,\, i( \vec\sigma_1\!+\!\vec\sigma_2)\!\cdot \!(\vec q\!\times \! \vec p\,),\, (\vec\sigma_1\!\cdot\!\vecp\,\vec\sigma_2\!\cdot\!\vec p+\vec\sigma_1\!\cdot\!\vec p\,'\,\vec\sigma_2\!\cdot\!\vec p\,')$ and $ \vec\sigma_1\!\cdot \! (\vec q\!\times\! \vec p\,)\vec\sigma_2\!\cdot \! (\vec q\!\times \! \vec p\,)$ are expressedin terms of functions, which are either given in closed analytical form orrequire at most one numerical integration. The subsubleading chiral 3N-force istreated in the same way. The obtained results for $V_\text{med}$ are helpful toimplement the long-range chiral three-body forces into advanced neutron mattercalculations.

Density-dependent nn-potential from subleading chiral three-neutron forces: Long-range terms