98 citations · 665 across the 29 of their papers we have counts for
4 papers · 1 filter
Non-singlet Q-deformations of N=2 gauge theories
A. De Castro, E. Ivanov, O. Lechtenfeld +1
We study a non-anticommutative chiral non-singlet deformation of the N=(1,1) abelian gauge multiplet in Euclidean harmonic superspace. We present a closed form of the gauge transfo…
Matrix Models and D-branes in Twistor String Theory
Olaf Lechtenfeld, Christian Saemann
We construct two matrix models from twistor string theory: one by dimensional reduction onto a rational curve and another one by introducing noncommutative coordinates on the fibre…
Non-singlet Q-deformation of the N=(1,1) gauge multiplet in harmonic superspace
A. De Castro, E. Ivanov, O. Lechtenfeld +1
We study a non-anticommutative chiral non-singlet deformation of the N=(1,1) abelian gauge multiplet in Euclidean harmonic superspace with a product ansatz for the deformation matr…
Emergence of Time from Dimensional Reduction in Noncommutative Geometry
Chong-Sun Chu, Olaf Lechtenfeld
By considering a new form of dimensional reduction for noncommutative field theory, we show that the signature of spacetime may be changed. In particular, it is demonstrated that a…