SUNIL MUKHI

Tata Institute of Fundamental Research, Homi Bhabha Road, Mumbai 400 005, India

A boundary-state computation is performed to obtain derivative corrections to the Chern-Simons coupling between a p-brane and the RR gauge potential C _p-3. We work to quadratic order in the gauge field strength F, but all orders in derivatives. In a certain limit, which requires the presence of a constant B-field background, it is found that these corrections neatly sum up into the *₂ product of (commutative) gauge fields. The result is in agreement with a recent prediction using noncommutativity.

Abstract.

As an introduction to the special issue on nonlinear waves, solitons and their significance in physics are reviewed.  The soliton is the first universal concept in nonlinear science.  Universality and ubiquity of the soliton concept are emphasized. 

Keywords:  String theory; effective action; noncommutativity; field theory.

Pacs Nos.  11.25.Db; 11.25.Hf; 02.10.Pk