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Equation of State of Superfluid Neutron Matter and the Calculation of the ~1S_0 Pairing Gap

机译:超流体中子物质的状态方程和〜1S_0配对间隙的计算

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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 p < 0.04 fm~(-3). The system is described by a nonrelativistic 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.
机译:我们对中子物质的零温度状态方程进行量子蒙特卡洛研究,并在p <0.04 fm〜(-3)的低密度状态下计算〜1S_0配对间隙。该系统由非相对论核哈密顿量来描述,该哈密顿量包括Argonne和Urbana类型的两个和三个核子相互作用。这种模型相互作用在计算轻核的结合能方面提供了非常准确的结果。相对于纯BCS理论,发现了对间隙的抑制,但是比试图以近似方式包括极化效应的其他研究明显弱。

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