## Speaker:

Rainer Hempel

## Institution:

TU Braunschweig, Germany

## Time:

Thursday, November 13, 2003 - 2:00pm

## Location:

MSTB 254

We study the (signed) flow of spectral multiplicity for a family of magnetic Schrodinger operators in R^2,

$$

H(\lambda a) = (-i \nabla -\lambda a)^2 +V(x),

\lambda \ge 0,

$$

in the large coupling limit, i.e., $\lambda \to 0$. Our main assumption is for the magnetic field

$ B curl \lambda a$ to have compact support consisting of a finite number of components. The total magnetic flux may be non-zero.