121 citations · 3.6k across the 201 of their papers we have counts for
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Sigma-Model Solitons in the Noncommutative Plane: Construction and Stability Analysis
Andrei V. Domrin, Olaf Lechtenfeld, Stefan Petersen
Noncommutative multi-solitons are investigated in Euclidean two-dimensional U(n) and Grassmannian sigma models, using the auxiliary Fock-space formalism. Their construction and mod…
Noncommutative Sine-Gordon Model
Olaf Lechtenfeld
As I briefly review, the sine-Gordon model may be obtained by dimensional and algebraic reduction from 2+2 dimensional self-dual U(2) Yang-Mills through a 2+1 dimensional integrabl…
Non-anticommutative deformation of N=(1,1) hypermultiplets
Evgeny Ivanov, Olaf Lechtenfeld, Boris Zupnik
We study the SO(4)xSU(2) invariant and N=(1,0) supersymmetry-preserving nilpotent (non-anticommutative) Moyal deformation of hypermultiplets interacting with an abelian gauge multi…
Integrable Noncommutative Sine-Gordon Model
Olaf Lechtenfeld, Liuba Mazzanti, Silvia Penati +2
Requiring an infinite number of conserved local charges or the existence of an underlying linear system does not uniquely determine the Moyal deformation of 1+1 dimensional integra…
Supertwistors and Cubic String Field Theory for Open N=2 Strings
Olaf Lechtenfeld, Alexander D. Popov
The known Lorentz invariant string field theory for open N=2 strings is combined with a generalization of the twistor description of anti-self-dual (super) Yang-Mills theories. We…
Noncommutative Moduli for Multi-Instantons
Tatiana A. Ivanova, Olaf Lechtenfeld, Helge Mueller-Ebhardt
There exists a recursive algorithm for constructing BPST-type multi-instantons on commutative R^4. When deformed noncommutatively, however, it becomes difficult to write down non-s…