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arXiv 2410.01435hep-th
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$\mathcal{N} = 1$ SCFT中的超场twist-$2$算子及其在$\mathcal{N} = 1$ SYM理论中的重整化群改进生成泛函

Superfield twist-$2$ operators in $\mathcal{N} = 1$ SCFTs and their renormalization-group improved generating functional in $\mathcal{N} = 1$ SYM theory

Giacomo Santoni, Francesco Scardino

AI总结:

本文构造了$\mathcal{N}=1$ SCFT中共线twist-$2$算子的无限维不可约超共形表示,在SYM理论零耦合极限下计算了其重整化群改进生成泛函及大$N$展开,为非微扰解的寻找提供了强紫外渐近约束。

摘要:

我们提供了一种超场共线twist-$2$算子的新构造,作为$\mathcal{N}=1$超共形场论中共线超共形代数的无限维不可约表示。作为应用,我们在$\mathcal{N}=1$超对称Yang-Mills (SYM)理论的零耦合极限下,以明显规范不变和超对称协变的方式,用自由超场实现了上述表示。这种实现使其在单圈下的混合和重整化性质变得明显。我们还将[1-7]中的微扰和非微扰技术扩展到超场形式论,适用于一大类在零耦合极限下超共形的超对称理论。具体而言,我们计算了零耦合极限下$\mathcal{N}=1$ SU($N$) SYM理论中超场twist-$2$算子的生成泛函。我们还以封闭形式求出了欧几里得超空间中相应的渐近重整化群改进生成泛函,及其平面和主导非平面大$N$展开。我们验证了——正如[5]最初预测并在分量形式论[3, 4, 6, 7]中验证的那样——主导非平面渐近RG改进生成泛函匹配相应非微扰对象的泛函超行列式的对数结构,由于渐近自由,它在短距离下应渐近于该非微扰对象。因此,我们的大$N$计算对大$N$ $\mathcal{N}=1$ SYM理论的非微扰解设置了强紫外渐近约束,这可能成为寻找此类解的关键指导。

英文摘要:

We provide a new construction of superfield collinear twist-$2$ operators as infinite-dimensional, irreducible representations of the collinear superconformal algebra in $\mathcal{N}=1$ superconformal field theories. As an application, we realize the above representations in terms of free superfields, in a manifestly gauge-invariant and supersymmetric-covariant fashion, in the zero coupling limit of $\mathcal{N}=1$ supersymmetric Yang-Mills (SYM) theory. This realization makes manifest their mixing and renormalization properties at one loop. We also extend to the superfield formalism the perturbative and nonperturbative techniques in [1-7] to a large class of supersymmetric theories that are superconformal in the zero-coupling limit. Specifically, we compute the generating functional of superfield twist-$2$ operators in $\mathcal{N}=1$ SU($N$) SYM theory in the zero coupling limit. We also work out in a closed form the corresponding asymptotic renormalization-group improved generating functional in Euclidean superspace and its planar and leading nonplanar large-$N$ expansion. We verify -- as originally predicted in [5] and verified in the component formalism [3, 4, 6, 7] -- that the leading nonplanar asymptotic RG-improved generating functional matches the structure of logarithm of a functional superdeterminant of the corresponding nonperturbative object, which it should be asymptotic to at short distances because of the asymptotic freedom. Hence, our large-$N$ computation sets strong ultraviolet asymptotic constraints on the nonperturbative solution of large-$N$ $\mathcal{N} = 1$ SYM theory that may be a pivotal guide for the search of such a solution.

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