Speaker: 

Christoph Marx

Institution: 

Oberlin College

Time: 

Thursday, August 20, 2015 - 2:00pm

Location: 

rh 340P

We give a criterion implying subcritical behavior for quasi-periodic Schrödinger operators where the potential sampling function is given by a trigonometric polynomial. Subcritical behavior, in the sense of Avila’s global theory, is known to imply purely absolutely continuous spectrum for all irrational frequencies and all phases. The work is joint with Laura Shou and Jake Wellens.