Regge physics again

With the help of Grigory Ovanesyan and Basem El-Menoufi, we have made a nice step of progress in understanding Regge behavior in Soft Collinear Effective Theory (SCET). The paper is here. The issue turns out to be a very subtle one for effective field theory, involving the overlap of different field modes, and it may be important for understanding the limits of factorization theorems.