Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Benchmark calculations of infinite neutron matter with realistic two-
  and three-nucleon potentials   We present the equation of state of infinite neutron matter as obtained from
highly-realistic Hamiltonians that include nucleon-nucleon and three-nucleon
coordinate-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 to
provide similar equations of state when the Argonne $v_{18}$ and the Argonne
$v_{6}^\prime$ nucleon-nucleon potentials are used in combination with the
Urbana IX three-body force. Only at densities larger than about 1.5 the nuclear
saturation density ($\rho_0 = 0.16\,\rm{fm}^{-3}$) the FHNC/SOC energies are
appreciably lower than the other two approaches. The AFDMC calculations carried
out with all of the Norfolk potentials fitted to reproduce the experimental
trinucleon ground-state energies and $nd$ doublet scattering length yield
unphysically bound neutron matter, associated with the formation of neutron
droplets. Including tritium $\beta$-decay in the fitting procedure, as in the
second family of Norfolk potentials, mitigates but does not completely resolve
this problem. An excellent agreement between the BBG and AFDMC results is found
for the subset of Norfolk interactions that do not make neutron-matter
collapse, while the FHNC/SOC equations of state are moderately softer.

2
The categories of this paper are: math
27
The categories of this paper are: comp-gas
18
The categories of this paper are: econ
25
The categories of this paper are: patt-sol
0
The categories of this paper are: hep-ph
19
The categories of this paper are: eess
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
17
The categories of this paper are: q-fin
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio