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Large N limit of irreducible tensor models: O( N) rank-3 tensors with mixed permutation symmetry

机译:大<重点类型=“斜体”> n IRRAFUEIBLIBE张量模型的限制:O(<强调类型=“斜体”> n )秩3具有混合排列对称的张量

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A bstract It has recently been proven that in rank three tensor models, the antisymmetric and symmetric traceless sectors both support a large N expansion dominated by melon diagrams [1]. We show how to extend these results to the last irreducible O( N ) tensor representation available in this context, which carries a two-dimensional representation of the symmetric group S ~(3). Along the way, we emphasize the role of the irreducibility condition: it prevents the generation of vector modes which are not compatible with the large N scaling of the tensor interaction. This example supports the conjecture that a melonic large N limit should exist more generally for higher rank tensor models, provided that they are appropriately restricted to an irreducible subspace.
机译:Bstract最近已被证明,在第三级张量模型中,反对称和对称无抽头行业都支持由甜瓜图主导的大n扩展[1]。 我们展示了如何将这些结果扩展到在此上下文中可用的最后一个不可可动化的O(n)张量表示,其携带对称组S〜(3)的二维表示。 一路上,我们强调了不可缩放条件的作用:它可以防止产生与张量相互作用的大n级别不兼容的矢量模式。 该示例支持召集函数大n限制应该更普遍地存在于更高的等级张量模型,但是它们被适当地限制在不可缩短的子空间。

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