Quenched supersymmetry

Abstract

We study the effects of quenching in Super-Yang-Mills theory. While supersymmetry is broken, the lagrangian acquires a new flavour U(1 \ 1) symmetry. The anomaly structure thus differs from the unquenched case. We derive the corresponding low-energy effective lagrangian. As a consequence, we predict the mass splitting expected in numerical simulations for particles belonging to the lowest-lying supermultiplet

A note on effective N = 1 super-Yang-Mills theoriesversus lattice results

“…Supersymmetry requires that this scalar comes accompanied with an additional bosonic and two fermionic degrees of freedom originally residing in G. Thus, the massive three-form multiplet has altogether four bosonic and four fermionic degrees of freedom, i.e. twice the number of of physical degrees of freedom of S. 8 To see this more explicitly let us now turn to the effective action suggested in [5].…”

“…Independent of these developments lattice simulations of supersymmetric pure SU(2) gauge theories have been improved [7,8,9]. 2 Most of the lattice computations use Wilsontype lattice actions where supersymmetry is softly broken by a gluino mass term and later recovered in the continuum limit.…”

Progress in Four-Dimensional Lattice Supersymmetry

“…Besides the absence of nonperturbative fine-tuning of the gaugino mass, DWF have the advantage that the fermion measure is positive and the square root of the determinant which enforces the Majorana condition is analytic with a phase that is independent of the gauge fields [58,60]. These three features are all lacking in the Wilson fermion formulation that was applied in the only concerted lattice SYM effort to date, by the DESY-Münster-Roma collaboration [61,120,[127][128][129][130] and to a lesser extent Donini et al [64,131,132]. (Recently, this program has been revived [133].)…”