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arXiv 1102.1989hep-th
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D=3,N=1破缺超对称理论的超图技术

Supergraph techniques for D=3,N=1 broken supersymmetric theories

E. A. Gallegos, A. J. da Silva

摘要:

我们扩大了通常的D=3 N=1超图技术,包括(显式或自发)破缺的超对称规范理论的情况下。为了说明这些技术的实用性,我们使用蝌蚪和真空泡方法计算SQED 3的双圈有效势。在这些方法中,为了研究超对称性破缺的可能性,超场必须被$θ$依赖的经典超场(真空期望值)移动,这意味着在计算的中间步骤中超对称性的显式破缺。然而,在研究了由此产生的有效势的最小值之后,我们发现超对称性是守恒的,而规范对称性是动态破缺的,并为规范超场产生了质量。

英文摘要:

We enlarge the usual D=3 N=1 supergraph techniques to include the case of (explicitly or spontaneously) broken supersymmetric gauge theories. To illustrate the utility of these techniques, we calculate the two-loop effective potential of the SQED3 by using the tadpole and the vacuum bubble methods. In these methods, to investigate the possibility of supersymmetry breaking, the superfields must be shifted by $θ$ dependent classical superfields (vacuum expectation values), what implies in the explicit breakdown of supersymmetry in the intermediate steps of the calculation. Nevertheless, after studying the minimum of the resulting effective potential, we find that supersymmetry is conserved, while gauge symmetry is dynamically broken, with a mass generated for the gauge superfield.

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