815 citations · 7.3k across the 94 of their papers we have counts for
6 papers · 1 filter
String Solitons
M. J. Duff, Ramzi R. Khuri, J. X. Lu
We review the status of solitons in superstring theory, with a view to understanding the strong coupling regime. These {\it solitonic} solutions are non-singular field configuratio…
Classical/Quantum Duality
M. J. Duff
String theory requires two kinds of loop expansion: classical worldsheet loops with expansion parameter where is a modulus field, and quantum spacetime l…
Kaluza-Klein Theory in Perspective
M. J. Duff
The Kaluza-Klein idea of extra spacetime dimensions continues to pervade current attempts to unify the fundamental forces, but in ways somewhat different from that originally envis…
Putting string/string duality to the test
M. J. Duff, R. Minasian
After simultaneous compactification of spacetime and worldvolume on , the heterotic fivebrane with gauge group behaves like a heterotic string with gauge…
Massive String States as Extreme Black Holes
M. J. Duff, J. Rahmfeld
We consider the Schwarz-Sen spectrum of elementary electrically charged massive states of the four-dimensional heterotic string and show the maximum spin supermultipl…
Macroscopic superstrings as interpolating solitons
M. J. Duff, G. W. Gibbons, P. K. Townsend
It is known that, in string sigma-model metric, the `extreme' fivebrane solution of D=10 supergravity interpolates between D=10 Minkowski spacetime and a supersymmetric compa…