Coherent degenerate dark matter: a galactic superfluid?1
Coherent degenerate dark matter: a galactic superfluid?1
复制标题
相干简并暗物质：银河超流体？1
DOI：
10.1088/0264-9381/18/17/101
复制
发表时间：
2001
影响因子：
3.5
通讯作者：
R. Mallett
中科院分区：
文献类型：
--
作者：
M. Silverman;R. Mallett
由玻色-爱因斯坦凝聚体（BEC）组成的暗物质形成了其相干长度大小的结构，这是由量子压力和引力之间的平衡决定的。这也是BEC超流体中量子涡旋的核心尺寸。根据仙女座星系（M31）的密度和自转曲线，我们估算了组成晕的暗物质凝聚体的粒子质量、粒子密度、相干长度、临界温度、临界角频率和涡旋线密度。
Dark matter comprising a Bose-Einstein condensate (BEC) forms structures of the size of its coherence length, as determined by equilibrium between quantum pressure and gravitational attraction. This is also the core size of quantum vortices in a BEC superfluid. From the density and rotation curve of the Andromeda Galaxy (M31) we estimate the particle mass, particle density, coherence length, critical temperature, critical angular frequency, and vortex line density of the dark matter condensate composing the halo.