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7 papers · 2 filters
Remarks on Non-Abelian Duality
S. Elitzur, A. Giveon, E. Rabinovici +2
A class of two-dimensional globally scale-invariant, but not conformally invariant, theories is obtained. These systems are identified in the process of discussing global and local…
A truly marginal deformation of SL(2,R) in a null direction
Stefan Forste
We perform a marginal deformation of the SL(2,R) WZW model in a null direction. If we send the deformation parameter to infinity we obtain a linear dilaton background plus two free…
Non-Abelian Strong-Weak Coupling Duality in (String-Derived) N=4 Supersymmetric Yang-Mills Theories
L. Girardello, A. Giveon, M. Porrati +1
We study strong-weak coupling duality (S-duality) in N=4 supersymmetric non-Abelian Yang-Mills theories. These theories arise naturally as the low-energy limit of four-dimensional…
The Internal Geometry of an Evaporating Black Hole
Renaud Parentani, Tsvi Piran
We present a semi-classical model for the formation and evaporation of a four dimensional black hole. We solve the equations numerically and obtain solutions describing the entire…
Mirror Symmetry as a Gauge Symmetry
Amit Giveon, Edward Witten
It is shown that in string theory mirror duality is a gauge symmetry (a Weyl transformation) in the moduli space of backgrounds on group manifolds, and we conjecture on the p…
String--Kaluza--Klein Cosmology
K. Behrndt, S. Foerste
We generalize a five dimensional black hole solution of low energy effective string theory to arbitrary constant spatial curvature. After interchanging the signature of time and ra…