Equation of state of superfluid neutron matter and the calculation of $^1S_0$ pairing gap

Details Equation of state of superfluid neutron matter and the calculation of $^1S_0$ pairing gap Equation of state of superfluid neutron matter and the calculation of $^1S_0$ pairing gap

2008-05-16

arxiv.org/abs/0805.2513v1

Phys.Rev.Lett.101:132501,2008

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevLett.101.132501

We present a Quantum Monte Carlo study of the zero temperature equation of state of neutron matter and the computation of the $^1S_0$ pairing gap in the low-density regime with $\rho<0.04$ fm$^{-3}$. The system is described by a non-relativistic nuclear Hamiltonian including both two-- and three--nucleon interactions of the Argonne and Urbana type. This model interaction provides very accurate results in the calculation of the binding energy of light nuclei. A suppression of the gap with respect to the pure BCS theory is found, but sensibly weaker than in other works that attempt to include polarization effects in an approximate way.

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