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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present the equation of state of infinite neutron matter as obtained fromhighly-realistic Hamiltonians that include nucleon-nucleon and three-nucleoncoordinate-space potentials. We benchmark three independent many-body methods:Brueckner-Bethe-Goldstone (BBG), Fermi hypernetted chain/single-operator chain(FHNC/SOC), and auxiliary-field diffusion Monte Carlo (AFDMC). We find them toprovide similar equations of state when the Argonne $v_{18}$ and the Argonne$v_{6}^\prime$ nucleon-nucleon potentials are used in combination with theUrbana IX three-body force. Only at densities larger than about 1.5 the nuclearsaturation density ($\rho_0 = 0.16\,\rm{fm}^{-3}$) the FHNC/SOC energies areappreciably lower than the other two approaches. The AFDMC calculations carriedout with all of the Norfolk potentials fitted to reproduce the experimentaltrinucleon ground-state energies and $nd$ doublet scattering length yieldunphysically bound neutron matter, associated with the formation of neutrondroplets. Including tritium $\beta$-decay in the fitting procedure, as in thesecond family of Norfolk potentials, mitigates but does not completely resolvethis problem. An excellent agreement between the BBG and AFDMC results is foundfor the subset of Norfolk interactions that do not make neutron-mattercollapse, while the FHNC/SOC equations of state are moderately softer.

Benchmark calculations of infinite neutron matter with realistic two- and three-nucleon potentials