Non-commutative (D)-instantons
摘要
We study systems of D3 and D(-1) branes in a NS-NS magnetic background and show that, when the brane configuration is stable, the physical degrees of freedom of the open strings with at least one end-point on the D-instantons describe the ADHM moduli of instantons for non-commutative gauge theories. We also prove that disk diagrams with mixed boundary conditions are the sources for the classical profile of the non-commutative gauge instantons in the singular gauge. We finally compare the string theory description in a large distance expansion with the non-commutative ADHM construction in the singular gauge and find complete agreement at perturbative level in the non-commutativity parameter.
引用
@article{arxiv.hep-th/0511036,
title = {Non-commutative (D)-instantons},
author = {Marco Billo and Marialuisa Frau and Stefano Sciuto and Giuseppe Vallone and Alberto Lerda},
journal= {arXiv preprint arXiv:hep-th/0511036},
year = {2009}
}
备注
36 pages, 3 figures, JHEP class (included); a few references added