Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2002-11-06
JHEP 0212 (2002) 060
Physics
High Energy Physics
High Energy Physics - Theory
1+16 pages; v2: typos corrected, published version; v3: eq.(4.16) corrected; v4: eqs. (3.22),(3.24),(3.30),(3.31) corrected
Scientific paper
10.1088/1126-6708/2002/12/060
Almost all known instanton solutions in noncommutative Yang-Mills theory have been obtained in the modified ADHM scheme. In this paper we employ two alternative methods for the construction of the self-dual U(2) BPST instanton on a noncommutative Euclidean four-dimensional space with self-dual noncommutativity tensor. Firstly, we use the method of dressing transformations, an iterative procedure for generating solutions from a given seed solution, and thereby generalize Belavin's and Zakharov's work to the noncommutative setup. Secondly, we relate the dressing approach with Ward's splitting method based on the twistor construction and rederive the solution in this context. It seems feasible to produce nonsingular noncommutative multi-instantons with these techniques.
Horváth Zalán
Lechtenfeld Olaf
Wolf Martin
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