学术活动

辛几何讨论班 Non-Fermi Liquid Behaviors in the Hubbard model on the Honeycomb lattice - 王智拓 教授(哈尔滨工业大学)

作者:   来源:  时间:2019-11-20

辛几何讨论班

 

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

报告人:王智拓 教授(哈尔滨工业大学)

Abstract:

  I will talk about recent work about the constructive renormalization theory and its application to the quantum many-body system (arXiv:1907.12553). In this work 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11月20日(周三)上午10:30-11:30

地点:首都师范大学本部教二627教室

联系人:孙善忠

欢迎全体师生积极参加!