Equation of state of low-density neutron matter, and the 1S0 pairing gap

被引：61

作者：

Gandolfi, S. ^{[1
,2
]}

Illarionov, A. Yu. ^{[1
,2
]}

Pederiva, F. ^{[3
,4
]}

Schmidt, K. E. ^{[5
]}

Fantoni, S. ^{[1
,2
,6
]}

机构：

[1] Scuola Int Super Studi Avanzati, SISSA, I-34014 Trieste, Italy

[2] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy

[3] Univ Trent, Dipartimento Fis, I-38050 Trento, Italy

[4] Ist Nazl Fis Nucl, Grp Coll Trento, Trento, Italy

[5] Arizona State Univ, Dept Phys, Tempe, AZ 85287 USA

[6] Natl Simulat Ctr, INFM CNR DEMOCRITOS, Trieste, Italy

来源：

PHYSICAL REVIEW C | 2009年 / 80卷 / 04期

基金：

美国国家科学基金会;

关键词：

QUASI-PARTICLE INTERACTIONS; MONTE-CARLO CALCULATIONS; EFFECTIVE-FIELD THEORY; TO-LEADING ORDER; NUCLEAR; LATTICE;

D O I：

10.1103/PhysRevC.80.045802

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We report results of the equation of state of neutron matter in the low-density regime, where the Fermi wave vector ranges from 0.4 <= k(F) <= 1.0 fm(-1). Neutron matter in this regime is superfluid because of the strong and attractive interaction in the S-1(0) channel. The properties of this superfluid matter are calculated starting from a realistic Hamiltonian that contains modern two-and three-body interactions. The ground state energy and the 1S0 superfluid energy gap are calculated using the auxiliary field diffusion Monte Carlo method. We study the structure of the ground state by looking at pair distribution functions as well as the Cooper-pair wave function used in the calculations.

引用

页数：11

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