Instanton calculus with R-R background and topological strings

被引：2
|
作者：
Billo, Marco [1 ]
机构：
[1] Univ Turin, Ist Nazl Fis Nucl, Dipartmento Fis Teor, Sez Torino, I-10125 Turin, Italy
来源：
FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS | 2007年 / 55卷 / 5-7期
关键词：
strings; branes; instantons; graviphoton; topological;
D O I：
10.1002/prop.200610343
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The non-perturbative low energy effective action of N=2 SYM is studied within a microscopic string realization via D3/D-instanton systems. The localization deformation of instanton moduli space which has allowed the exact computation of multi-instanton contributions is, in this setting, due to a RR graviphoton background. The relation of deformed instanton contributions to topological string amplitudes on CY, argued by Nekrasov, appears quite natural in this framework. Based on Billo, et al., J. High Energy Phys. 0611, 012 (2006) [arXiv:hep-th/0606013]. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
引用
收藏
页码：561 / 566
页数：6
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