银道暗物质玻色-爱因斯坦凝聚体晕能含量的讨论
Discussion on the energy content of the galactic dark matter Bose-Einstein condensate halo in the Thomas-Fermi approximation
摘要：
我们表明，银河系暗物质晕，被认为是由一个轴子粒子玻色-爱因斯坦凝聚体\cite{pir12}捕获的自引力势\cite{boh07}，可能是稳定的，因为适当的选择暗物质粒子的质量和散射长度。通过计算Boehmer-Harko密度剖面描述的星系晕的势能、动能和自相互作用能项，进行了演示。我们讨论了Halo系统的T-Fermi近似的有效性，并表明动能的贡献确实可以忽略。
英文摘要：
We show that the galactic dark matter halo, considered composed of an axionlike particles Bose-Einstein condensate \cite{pir12} trapped by a self-graviting potential \cite{boh07}, may be stable in the Thomas-Fermi approximation since appropriate choices for the dark matter particle mass and scattering length are made. The demonstration is performed by means of the calculation of the potential, kinetic and self-interaction energy terms of a galactic halo described by a Boehmer-Harko density profile. We discuss the validity of the Thomas-Fermi approximation for the halo system, and show that the kinetic energy contribution is indeed negligible.
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