[iasmath-seminars] Reminder for tonight's Mathematical Conversation

[Anthony Pulido]

INSTITUTE FOR ADVANCED STUDY
School of Mathematics
Princeton, NJ 08540

Mathematical Conversations
Wednesday, October 18

About Mathematical Conversations: We meet in Harry's Bar at 6pm, where free drinks are provided. After 20 minutes, we move to the Dilworth room, where the speaker gives a 20-minute talk, followed by 15 minutes of discussion with the audience. After that we return to the bar for further discussions. Website:https://www.math.ias.edu/math-conversations

To view mathematics in titles and abstracts, please click on the talk's link.


Topic: 		Spectral gaps without frustration
Speaker: 	Marius Lemm, California Institute of Technology; Member, School of Mathematics
Time/Room: 	6:00pm - 7:00pm/Dilworth Room
Abstract Link:	http://www.math.ias.edu/seminars/abstract?event=131210

In spin systems, the existence of a spectral gap has far-reaching 
consequences. "Frustration-free" spin systems form a subclass that is 
special enough to make the spectral gap problem amenable and, at the 
same time, broad enough to be physically relevant. We discuss 
"finite-size criteria", which allow to bound the spectral gap of the 
infinite system by the spectral gap of finite subsystems. We focus on 
the connection between spectral gaps and boundary conditions.

http://www.math.ias.edu/seminars