Spergel DN, Steinhardt PJ
Princeton University, Princeton, New Jersey 08544, USA.
Phys Rev Lett. 2000 Apr 24;84(17):3760-3. doi: 10.1103/PhysRevLett.84.3760.
Cosmological models with cold dark matter composed of weakly interacting particles predict overly dense cores in the centers of galaxies and clusters and an overly large number of halos within the Local Group compared to actual observations. We propose that the conflict can be resolved if the cold dark matter particles are self-interacting with a large scattering cross section but negligible annihilation or dissipation. In this scenario, astronomical observations may enable us to study dark matter properties that are inaccessible in the laboratory.
由弱相互作用粒子构成的冷暗物质的宇宙学模型预测，星系和星系团中心存在过度致密的核心，并且与实际观测相比，本星系群内的晕数量过多。我们提出，如果冷暗物质粒子具有大散射截面的自相互作用，但湮灭或耗散可忽略不计，那么这个矛盾就能得到解决。在这种情况下，天文观测可能使我们能够研究实验室中无法获取的暗物质性质。
