Speaker: 

Ken Alexander

Institution: 

USC

Time: 

Tuesday, February 5, 2013 - 11:00am to 12:00pm

Location: 

RH 306

 We study the path properties of the random polymer attracted to a defect line by a potential with disorder, and we prove that in the delocalized regime, at any temperature, the number of contacts with the defect line remains in a certain sense ``tight in probability'' as the polymer length varies. On the other hand we show that at sufficiently low temperature, there exists a.s. a subsequence where the number of contacts grows like the log of the length of the polymer.