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arXiv 1006.2299hep-th
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新的超对称西格玛模型对偶

New supersymmetric sigma-model duality

Sergei M. Kuzenko, Ulf Lindstrom, Rikard von Unge

摘要:

利用射影超空间方法研究了离壳四维N = 2超对称σ模型的对偶性。这些包括(i)实O(2n)和极多重态之间的对偶;(ii)极-极对偶。证明了任何超共形西格玛模型的对偶都是超共形的。由于用极多重态表示的N = 2个超共形σ模型(其目标空间是超卡勒锥)自然地与卡勒锥(其是N = 1个超共形σ模型的目标空间)相关联,极-极对偶产生了不同卡勒锥之间的变换。在非超共形情形下,我们研究了N = 1手征超场的西格玛模型的极-极对偶性。特别地,我们找到了原始超卡勒势和它的对偶之间的关系。作为极-极对偶的一个应用,我们研究了自对偶模型。

英文摘要:

We study dualities in off-shell 4D N = 2 supersymmetric sigma-models, using the projective superspace approach. These include (i) duality between the real O(2n) and polar multiplets; and (ii) polar-polar duality. We demonstrate that the dual of any superconformal sigma-model is superconformal. Since N = 2 superconformal sigma-models (for which target spaces are hyperkahler cones) formulated in terms of polar multiplets are naturally associated with Kahler cones (which are target spaces for N = 1 superconformal sigma-models), polar-polar duality generates a transformation between different Kahler cones. In the non-superconformal case, we study implications of polar-polar duality for the sigma-model formulation in terms of N = 1 chiral superfields. In particular, we find the relation between the original hyperkahler potential and its dual. As an application of polar-polar duality, we study self-dual models.

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