Thursday, January 23, 2003, 4:00 pm, 265 Phillips Hall
Martin Schnabl (MIT, LNS),
    Operator vs. Geometric approach to String Field Theory

 
One of the most difficult technical tasks in open bosonic string field
theory is to find a conformal map from a given Riemann surface onto a unit
disk. Usually the Riemann surface in question arises by gluing together
some simpler surfaces.  Sometimes the problem can be solved easily within
the operator formalism, where the main tools are conservation laws and
reparametrizations. We will describe our ideas on examples such as wedge
and butterfly states.