Speaker:
Rui Han
Institution:
UC Irvine
Time:
Monday, May 22, 2017 - 5:00pm
Location:
RH 306
We will show that if a discrete d-dimensional Schr\"odinger operator has only discrete spectrum outside the interval [-2d, 2d], then its essential spectrum must be [-2d, 2d].
This talk will be based on a recent work by Killip, Molchanov and Safronov.