Aspects of ABJM orbifolds with discrete torsion

Details Aspects of ABJM orbifolds with discrete torsion Aspects of ABJM orbifolds with discrete torsion

2010-11-22

arxiv.org/abs/1011.4733v1

Physics

High Energy Physics

High Energy Physics - Theory

Scientific paper

We analyze orbifolds with discrete torsion of the ABJM theory by a finite subgroup $\Gamma$ of $SU(2)\times SU(2)$ . Discrete torsion is implemented by twisting the crossed product algebra resulting after orbifolding. It is shown that, in general, the order $m$ of the cocycle we chose to twist the algebra by enters in a non trivial way in the moduli space. To be precise, the M-theory fiber is multiplied by a factor of $m$ in addition to the other effects that were found before in the literature. Therefore we got a $\mathbb{Z}_{\frac{k|\Gamma|}{m}}$ action on the fiber. We present a general analysis on how this quotient arises along with a detailed analysis of the cases where $\Gamma$ is abelian.

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