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arXiv 1607.08646hep-th
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规范耦合场、流、反常和N=1超杨-米尔斯有效作用量

Gauge Coupling Field, Currents, Anomalies and N=1 Super-Yang-Mills Effective Actions

Nicola Ambrosetti, Daniel Arnold, Jean-Pierre Derendinger, Jelle Hartong

摘要:

利用线性超场中的规范耦合场,构造了N=1超杨-米尔斯理论的有效拉格朗日量,它与期望的全序行为或物理量完全相容.利用紫外截止的单圈依赖性和反常匹配或R与膨胀反常的抵消,我们得到了威尔逊有效拉格朗日量。用类似的反常匹配或抵消方法,我们导出了高吉诺凝聚的有效作用量,作为实耦合场的函数。这两个有效的行动导致推导的NSVZ β函数从代数参数。结果扩展到N=2理论或物质系统被简要考虑。讨论反常现象的主要工具是一个具有16_B+16_F算符(S多重态)的一般超流结构,我们利用超空间恒等式和具有线性规范耦合超场和各种U(1)_R流的完全一般的规范理论拉格朗日量的场方程推导出该超流结构。作为一个副产品,我们表明在何种条件下的S多重态可以改进,以包含的Callan-Coleman-Jackiw能量动量张量,其跟踪措施的尺度不变性的破坏。

英文摘要:

Working with a gauge coupling field in a linear superfield, we construct effective Lagrangians for N=1 super-Yang-Mills theory fully compatible with the expected all-order behaviour or physical quantities. Using the one-loop dependence on its ultraviolet cutoff and anomaly matching or cancellation of R and dilatation anomalies, we obtain the Wilsonian effective Lagrangian. With similar anomaly matching or cancellation methods, we derive the effective action for gaugino condensates, as a function of the real coupling field. Both effective actions lead to a derivation of the NSVZ beta function from algebraic arguments only. The extension of results to N=2 theories or to matter systems is briefly considered. The main tool for the discussion of anomalies is a generic supercurrent structure with 16_B+16_F operators (the S multiplet), which we derive using superspace identities and field equations for a fully general gauge theory Lagrangian with the linear gauge coupling superfield, and with various U(1)_R currents. As a byproduct, we show under which conditions the S multiplet can be improved to contain the Callan-Coleman-Jackiw energy-momentum tensor whose trace measures the breaking of scale invariance.

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