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Some Computations in Background Independent Open-String Field Theory
Edward Witten
Recently, background independent open-string field theory has been formally defined in the space of all two-dimensional world-sheet theories. In this paper, to make the constructio…
On Background Independent Open-String Field Theory
Edward Witten
A framework for background independent open-string field theory is proposed. The approach involves using the BV formalism -- in a way suggested by recent developments in closed-str…
Chern-Simons Gauge Theory As A String Theory
Edward Witten
Certain two dimensional topological field theories can be interpreted as string theory backgrounds in which the usual decoupling of ghosts and matter does not hold. Like ordinary s…
A Closed, Expanding Universe in String Theory
Chiara R. Nappi, Edward Witten
We present a conformal field theory -- obtained from a gauged WZW model -- that describes a closed, inhomogeneous expanding and recollapsing universe in dimensions. A possibl…
Two Dimensional String Theory And Black Holes
Edward Witten
This lecture surveys a few loosely related topics, ranging from the scarcity of quantum field theories -- and the role that this has played, and still plays, in physics -- to parad…
Two Dimensional Gauge Theories Revisited
Edward Witten
Topological gravity is equivalent to physical gravity in two dimensions in a way that is still mysterious, though by now it has been proved by Kontsevich. In this paper it is shown…