报告题目： Zero entropic relaxation time for a ferromagnetic fluid system 报 告 人： Dr. Stefano Scrobogna 报告人所在单位： Basque Center for Applied Mathematics, Spain 报告日期： 2018-11-13 星期二 报告时间： 10:00-11:00 报告地点： 光华东主楼2001 报告摘要： In the physical sciences, relaxation usually means the return of a perturbed system to equilibrium. Each relaxation process can be categorized by a relaxation time $\tau$, for a generic commercial grade ferrofluid (a mixture of nanoscale ferromagnetic particles of a compound containing iron suspended in a fluid) the relaxation time is very small, of the order $\tau \approx 10^{-9}$; it makes hence sense to provide an asymptotic approximation when $\tau \to 0$. In this talk I will explain how to construct solutions for the Shliomis model of ferrofluids in a critical space of infinite $L2$ energy uniformly for $\tau\in (0, \tau_0)$, such uniform construction will allow us to study the limit regime $\tau \to 0$ and the convergence of the critical solutions. 本年度学院报告总序号： 242