On the restoration of supersymmetry in twisted two-dimensional lattice Yang-Mills theory

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We study a discretization of ≤ 2 super Yang-Mills theory which possesses a single exact supersymmetry at non-zero lattice spacing. This supersymmetry arises after a reformulation of the theory in terms of twisted fields. In this paper we derive the action of the other twisted supersymmetries on the component fields and study, using Monte Carlo simulation, a series of corresponding Ward identities. Our results for SU(2) and SU(3) support a restoration of these additional supersymmetries without fine tuning in the infinite volume continuum limit. Additionally we present evidence supporting a restoration of (twisted) rotational invariance in the same limit. Finally we have examined the distribution of scalar field eigenvalues and find evidence for power law tails extending out to large eigenvalue. We argue that these tails indicate that the classical moduli space does not survive in the quantum theory.

Original languageEnglish (US)
Article number015
JournalJournal of High Energy Physics
Issue number4
StatePublished - Apr 1 2007


  • Extended supersymmetry
  • Lattice gauge field theories
  • Lattice quantum field theory

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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