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arXiv 0710.2218hep-th
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变形超杨-米尔斯理论中的瞬子

Instantons in Deformed Super Yang-Mills Theories

Shin Sasaki, Katsushi Ito, Hiroaki Nakajima

摘要:

研究了变形四维N=2和N=4超Yang-Mills(SYM)理论中的瞬子有效作用量.这些变形规范理论定义在D膜世界体积上,存在恒定的自对偶Ramond-Ramond(R-R)3-形式的场强背景$\mathcal{F}$,其在零斜率极限$α' \to 0$标度为$(2 πα')^{1/2} \mathcal{F} = fixed$。通过求解变形N=2 SYM作用量的运动方程,得到瞬子有效作用量。我们证明了这种有效作用量在最低阶的背景和规范耦合常数下正确地再现了由D ~ 3/D(-1)-膜系统导出的弦论结果。

英文摘要:

We study the instanton effective action in deformed four-dimensional N=2 and N=4 super Yang-Mills (SYM) theories. These deformed gauge theories are defined on the D-brane world-volume in the presence of constant, self-dual Ramond-Ramond (R-R) 3-form field strength background $\mathcal{F}$ which is scaled as $(2 πα')^{1/2} \mathcal{F} = fixed$ in the zero-slope limit $α' \to 0$. The instanton effective action is obtained by solving equations of motion of the deformed N=2 SYM action. We show that this effective action correctly reproduces the string theory result derived from D3/D(-1)-branes system in the lowest order of the backgrounds and gauge coupling constant.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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