arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1403.7613hep-th
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$Y$系统、$Q$系统和4D $\mathcal{N}=2$超对称QFT

$Y$ systems, $Q$ systems, and 4D $\mathcal{N}=2$ supersymmetric QFT

Sergio Cecotti, Michele Del Zotto

摘要:

本文综述了$Y$ -和$Q$ -体系与$4D$ $\mathcal{N}=2$超对称QFT的BPS谱之间的联系。对于UV超共形的$\mathcal{N}=2$模型的每个有限BPS腔,得到周期$Y$ -系统,而对于渐近自由的$\mathcal{N}=2$ QFT的每个有限BPS腔,得到$Q$ -系统,即有理递归,其所有解满足具有常系数的线性递归(取决于初始条件)。例如,Zamolodchikov的经典$ADE$ $Y$ -系统对应于$ADE$ Argyres-Douglas $\mathcal{N}=2$ SCFT,而通常的$ADE$ $Q$ -系统对应于纯$\mathcal{N}=2$ SYM。在激发了QFT和TBA双方的对应关系,并介绍了交易的基本技巧之后,我们利用这种联系来构建和求解新的$Y$ -和$Q$ -系统。特别是,我们提出了新的$Y$ -系统相关的$E_6,E_7,E_8$ Minahan-Nemeshanski SCFT和$D_2(G)$ SCFT。我们还提出了新的$Q$ -系统对应于SYM耦合到特定的物质系统,使YM $β$ -功能保持负。

英文摘要:

We review the connection of $Y$- and $Q$-systems with the BPS spectra of $4D$ $\mathcal{N}=2$ supersymmetric QFTs. For each finite BPS chamber of a $\mathcal{N}=2$ model which is UV superconformal, one gets a periodic $Y$-system, while for each finite BPS chamber of an asymptotically-free $\mathcal{N}=2$ QFT one gets a $Q$-system i.e. a rational recursion all whose solutions satisfy a linear recursion with constant coefficients (depending on the initial conditions). For instance, the classical $ADE$ $Y$-systems of Zamolodchikov correspond to the $ADE$ Argyres-Douglas $\mathcal{N}=2$ SCFTs, while the usual $ADE$ $Q$-systems to pure $\mathcal{N}=2$ SYM. After having motivated the correspondence both from the QFT and the TBA sides, and having introduced the basic tricks of the trade, we exploit the connection to construct and SOLVE new $Y$- and $Q$-systems. In particular, we present the new $Y$-systems associated to the $E_6,E_7,E_8$ Minahan-Nemeshanski SCFTs and to the $D_2(G)$ SCFTs. We also present new $Q$-system corresponding to SYM coupled to specific matter systems such that the YM $β$-function remains negative.

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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