the mean-field theory

In the first chapter, we shall give a simple introduction to the mean-field theory and its history, research status and applications of chaos in BEC.

第一章简单介绍了平均场理论以及玻色-爱因斯坦凝聚领域中有关混沌的研究历史，现状和应用。

Generally, physicists derive steady-state degree distribution of networks by using the mean-field theory, master-equation and rate-equation approach, but their methods are not rigorous mathematically.

物理学家一般采用平均场方法、率方程方法和主方程方法研究网络的稳态度分布，但都不是严格证明。

The influences of different current quark masses on the properties of hybrid stars were studied via the relativistic mean field theory and the effective mass bag model.

利用强子物质的相对论平均场理论和夸克物质的有效质量口袋模型，研究流夸克质量的选取对混合星性质的影响。