南京大学数学系

题目： Non-Fermi Liquid Behaviors in the Hubbard model on the Honeycomb lattice

报告人：王智拓（哈尔滨工业大学）

摘要：I will talk about the constructive renormalization theory and its application to the quantum many-body system. More precisely, we study the low temperature behavior of the weakly interacting Hubbard model on the honeycomb lattice with a bare chemical potential, which takes values in a small neighborhood of $1$. We prove that the two-point Schwinger's function is an analytic function of the coupling constant $\lambda$ in the domain $|\lambda|\cdot|\log T|^2<1$. But the ground state of this model is not a Fermi liquid, because analytic properties of self-energy don't satisfy the Salmhofer's criterion on the Fermi liquids at finite temperature.

时间：2019年8月19日 10:00–12:00

地点：蒙民伟楼1105

邀请人：王奕倩老师