Reduced regulator dependence of neutron-matter predictions with perturbative chiral interactions

Coraggio, L.; Holt, J.W.; Itaco, N.; Machleidt, R.; Sammarruca, F.

doi:10.1103/PhysRevC.87.014322

Reduced regulator dependence of neutron-matter predictions with perturbative chiral interactions

L. Coraggio
(
- INFN, Naples and
- CNR-SPIN, Naples
)
,
J.W. Holt
(
- Munich, Tech. U. and
- Washington U., Seattle
)
,
N. Itaco
(
- INFN, Naples and
- Naples U. and
- CNR-SPIN, Naples
)
,
R. Machleidt
(
- Idaho U.
)
,
F. Sammarruca
(
- Idaho U.
)

Sep, 2012

7 pages

Published in:

Phys.Rev.C 87 (2013) 1, 014322

Published: Jan 17, 2013

e-Print:

1209.5537 [nucl-th]

DOI:

10.1103/PhysRevC.87.014322

View in:

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Abstract: (APS)

We calculate the energy per particle in infinite neutron matter perturbatively using chiral N3LO (next-to-next-to-next-to-leading order) two-body potentials plus N2LO three-body forces. The cutoff dependence of the predictions is investigated by employing chiral interactions with different regulators. We find that the inclusion of three-nucleon forces, which are consistent with the applied two-nucleon interaction, leads to a strongly reduced regulator dependence of the results.

Note:

7 pages, 8 figures, 1 table, to be published in Physical Review C

21.30.Fe
21.65.Cd
21.60.Jz
n: matter
energy: density
potential: chiral
three-body problem: force
perturbation theory: chiral
regularization
numerical calculations

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