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arXiv · 0903.4881

Exact lattice supersymmetry

Simon Catterall·David B. Kaplan·Mithat Unsal
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Abstract

We provide an introduction to recent lattice formulations of supersymmetric theories which are invariant under one or more real supersymmetries at nonzero lattice spacing. These include the especially interesting case of ${\cal N}=4$ SYM in four dimensions. We discuss approaches based both on twisted supersymmetry and orbifold-deconstruction techniques and show their equivalence in the case of gauge theories. The presence of an exact supersymmetry reduces and in some cases eliminates the need for fine tuning to achieve a continuum limit invariant under the full supersymmetry of the target theory. We discuss open problems.

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BibTeXRIS

Simon Catterall, David B. Kaplan, Mithat Unsal. 2009-09-18. Exact lattice supersymmetry. https://doi.org/10.1016/j.physrep.2009.09.001

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