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arXiv 1209.5328hep-th
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奇异SQCD矩阵与约束

Singular SQCD Vacua and Confinement

Simone Giacomelli, Kenichi Konishi

摘要:

根据我们对N=2规范理论动力学理解的一些最新进展,我们重新回顾了软破缺N=2超对称QCD中封闭真空的研究。这些真空的特征是一个有效的磁$SU(r)$规范群($0\leq r\leq N_f/2$),有时被称为$r$真空。进一步阐明了由半经典真空与量子真空匹配而产生的$r \leftrightarrow N_{f}-r$对偶性的意义。特别注意的是某些奇异SCFT的N=2 SQCD,驱动到约束阶段的伴随质量变形$μ\, Φ^{2}$。在某些情况下,当裸质量被调整到临界值时,它们是不同的$r$真空合并的结果。

英文摘要:

We revisit the study of confining vacua in the softly broken N=2 supersymmetric QCD, in the light of some recent developments in our understanding of the dynamics of N=2 gauge theories. These vacua are characterized by an effective magnetic $SU(r)$ gauge group ($0\leq r\leq N_f/2$) and are referred to sometimes as the $r$ vacua. We further clarify the meaning of $r \leftrightarrow N_{f}-r$ duality arising from the matching of semi-classical and quantum vacua. A particular attention is paid to certain singular SCFT's of N=2 SQCD, driven into confinement phase by the adjoint mass deformation $μ\, Φ^{2}$. In some cases they occur as a result of coalescence of different $r$ vacua as the bare mass is tuned to a critical value.

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