SUSY WT identity in a lattice formulation of 2D $\mathcal{N}=(2,2)$ SYM

Details SUSY WT identity in a lattice formulation of 2D $\mathcal{N}=(2,2)$ SYM SUSY WT identity in a lattice formulation of 2D $\mathcal{N}=(2,2)$ SYM

2009-08-17

arxiv.org/abs/0908.2274v2

Phys.Lett.B682:466-471,2010

Physics

High Energy Physics

High Energy Physics - Lattice

15 pages, uses elsart.cls, the final version to appear in Phys. Lett. B

Scientific paper

10.1016/j.physletb.2009.11.028

We address some issues relating to a supersymmetric (SUSY) Ward-Takahashi (WT) identity in Sugino's lattice formulation of two-dimensional (2D) $\mathcal{N}=(2,2)$ $SU(k)$ supersymmetric Yang-Mills theory (SYM). A perturbative argument shows that the SUSY WT identity in the continuum theory is reproduced in the continuum limit without any operator renormalization/mixing and tuning of lattice parameters. As application of the lattice SUSY WT identity, we show that a prescription for the hamiltonian density in this lattice formulation, proposed by Kanamori, Sugino and Suzuki, is justified also from a perspective of an operator algebra among correctly-normalized supercurrents. We explicitly confirm the SUSY WT identity in the continuum limit to the first nontrivial order in a semi-perturbative expansion.

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