We use cookies to ensure that we give you the best experience on our website. You can change your cookie settings at any time. Otherwise, we'll assume you're OK to continue.

Durham University

Department of Mathematical Sciences

Academic Staff

Publication details for Professor Emeritus Paul Mansfield

Ilderton, Anton & Mansfield, Paul (2005). Time evolution in string field theory and T-duality. Physics Letters B 607(3-4): 294-301.

Author(s) from Durham


The time evolution operator (Schrödinger functional) of quantum field theory can be expressed in terms of first quantised
particles moving on S1/Z2. We give a graphical derivation of this that generalises to second quantised string theory. T-duality
then relates evolution through time t with evolution through 1/t and an interchange of string fields and backgrounds.