121 citations · 1.8k across the 78 of their papers we have counts for
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Noncommutative 't Hooft Instantons
Olaf Lechtenfeld, Alexander D. Popov
We employ the twistor approach to the construction of U(2) multi-instantons `a la 't Hooft on noncommutative R^4. The noncommutative deformation of the Corrigan-Fairlie-'t Hooft-Wi…
Scattering of Noncommutative Solitons in 2+1 Dimensions
Olaf Lechtenfeld, Alexander D. Popov
Interactions of noncommutative solitons in a modified U(n) sigma model in 2+1 dimensions can be analyzed exactly. Using an extension of the dressing method, we construct explicit t…
Noncommutative Multi-Solitons in 2+1 Dimensions
Olaf Lechtenfeld, Alexander D. Popov
The study of noncommutative solitons is greatly facilitated if the field equations are integrable, i.e. result from a linear system. For the example of a modified but integrable U(…
Noncommutative Solitons in Open N=2 String Theory
Olaf Lechtenfeld, Alexander D. Popov, Bernd Spendig
Coincident D2-branes in open N=2 fermionic string theory with a B-field background yield an integrable modified U(n) sigma model on noncommutative R^{2,1}. This model provides a sh…