论文标题
从卫星星系中超轻暗物质的量子隧穿
Quantum Tunneling of Ultralight Dark Matter Out of Satellite Galaxies
论文作者
论文摘要
超轻标量（轴轴）暗物质的想法在理论上是吸引人的，可能会解决一些冷暗物质的小规模问题；因此，它值得谨慎关注。在这项工作中，我们仔细分析了由于宿主光环的潮汐重力而导致的矮卫星标量场的隧道。潮汐力远非球面对称。在正交平面上沿着光环中心到矮人的轴沿轴沿隧道。我们将波函数分解为球形术语，加上更高的谐波，集成角度，然后数值求解残留的径向schrödinger-Poisson系统。通过要求Fornax Dwarf Halo的核心至少可以在宇宙的年龄生存，将深色物质粒子质量限制为$ 2 \ times 10^{ - 22} \，\ mbox {ev} \ mbox {ev} \ lyseSim m \ sillsim m \ sillsim m \ sillsim 6 \ times 6 \ times 10^{ - 22}}} \，$ ev。有趣的是，我们表明，如果看到另一个非常低的密度光环，那么它将完全排除了超轻标量的核心建议。此外，不符合的颗粒可能会施加均匀的下限。我们还确定如何将残留卫星作为半径的函数分布。
The idea of ultralight scalar (axion) dark matter is theoretically appealing and may resolve some small-scale problems of cold dark matter; so it deserves careful attention. In this work we carefully analyze tunneling of the scalar field in dwarf satellites due to the tidal gravitational force from the host halo. The tidal force is far from spherically symmetric; causing tunneling along the axis from the halo center to the dwarf, while confining in the orthogonal plane. We decompose the wave function into a spherical term plus higher harmonics, integrate out angles, and then numerically solve a residual radial Schrödinger-Poisson system. By demanding that the core of the Fornax dwarf halo can survive for at least the age of the universe places a bound on the dark matter particle mass $2\times 10^{-22}\,\mbox{eV}\lesssim m\lesssim 6\times 10^{-22}\,$eV. Interestingly, we show that if another very low density halo is seen, then it rules out the ultralight scalar as core proposal completely. Furthermore, the non-condensed particles likely impose an even sharper lower bound. We also determine how the residual satellites could be distributed as a function of radius.
