标题： 扩散与温度和宇宙学常数之间的关系 显示英文标题

标题： A relation between diffusion,temperature and the cosmological constant

摘要： 我们证明，在膨胀宇宙中，扩散常数为\kappa ^{2}的扩散流体的温度在最终的德西特阶段趋于一个常数值 T=\kappa ^{2}/H，该阶段由哈勃常数决定的视界 1/H 特征。 如果德西特表面温度在最终平衡状态下与流体温度一致，那么宇宙常数 \Lambda=3H ^{2}=6\pi \kappa ^{2}. 显示英文摘要

摘要： We show that the temperature of a diffusing fluid with the diffusion constant \kappa^{2} in an expanding universe approaches a constant limit T=\kappa^{2}/H in its final de Sitter stage characterized by the horizon 1/H determined by the Hubble constant. If de Sitter surface temperature in the final equilibrium state coincides with the fluid temperature then the cosmological constant \Lambda=3H^{2}=6\pi\kappa^{2}.