Fukugita M, Liu GC, Sugiyama N
Institute for Cosmic Ray Research, University of Tokyo, Tanashi, Tokyo 188, Japan and Institute for Advanced Study, Princeton, New Jersey 08540, USA.
Phys Rev Lett. 2000 Feb 7;84(6):1082-5. doi: 10.1103/PhysRevLett.84.1082.
We consider the effect of three species of neutrinos with nearly degenerate mass on the cosmic structure formation in a low-matter-density universe within a hierarchical clustering scenario with a flat Gaussian initial perturbation spectrum. The matching condition for fluctuation powers at the COBE scale and at the cluster scale leads to a strong upper limit on neutrino mass. For a flat universe with matter density parameter Omega = 0.3, we obtain m(nu)<0.6 eV for the Hubble constant H0<80 km s(-1) Mpc(-1). Allowing for the more generous parameter space limited by Omega<0.4, H0<80 km s(-1) Mpc(-1) and age t(0)>11.5 Gyr, the limit is 0.9 eV.
我们考虑了在具有平坦高斯初始微扰谱的层级聚类场景下，三种质量近乎简并的中微子对低物质密度宇宙中宇宙结构形成的影响。在COBE尺度和星系团尺度上涨落功率的匹配条件导致了对中微子质量的一个严格上限。对于物质密度参数Ω = 0.3的平坦宇宙，当哈勃常数H0 < 80 km s⁻¹ Mpc⁻¹时，我们得到中微子质量m(ν) < 0.6 eV。考虑由Ω < 0.4、H0 < 80 km s⁻¹ Mpc⁻¹和年龄t(0) > 11.5 Gyr所限定的更宽松参数空间，该上限为0.9 eV。
