Title: Light-like rolling in level truncation

Abstract: I will discuss Light-like tachyon condensation in
level-truncated open string field theory in Siegel gauge. I will show
that the equations of motion at level zero and at level greater than
zero belong to distinct classes of delay-differential equations, and how
this implies that the nature of the non-locality changes when going
beyond level zero. I will then discuss the consequences this has on the
(in)stability of the initial value problem and the questions this raises.