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Five-branes And -Theory On An Orbifold
Edward Witten
We relate Type IIB superstrings compactified to six dimensions on K3 to an eleven-dimensional theory compactified on . Eleven-dimensional five-branes enter…
New N=2 Superconformal Field Theories in Four Dimensions
P. C. Argyres, M. R. Plesser, N. Seiberg +1
New examples of N=2 supersymmetric conformal field theories are found as fixed points of SU(2) N=2 supersymmetric QCD. Relations among the scaling dimensions of their relevant chir…
Heterotic and Type I String Dynamics from Eleven Dimensions
Petr Horava, Edward Witten
We propose that the ten-dimensional heterotic string is related to an eleven-dimensional theory on the orbifold in the same…
Small Instantons in String Theory
Edward Witten
A long-standing puzzle about the heterotic string has been what happens when an instanton shrinks to zero size. It is argued here that the answer at the quantum level is that an ex…
Evidence for Heterotic - Type I String Duality
Joseph Polchinski, Edward Witten
A study is made of the implications of heterotic string -duality and extended gauge symmetry for the conjectured equivalence of heterotic and Type I superstrings. While at first…
Bound States Of Strings And -Branes
Edward Witten
The recent discovery of an explicit conformal field theory description of Type II -branes makes it possible to investigate the existence of bound states of such objects. In part…