Simulations of supersymmetric Yang-Mills theory

Details Simulations of supersymmetric Yang-Mills theory Simulations of supersymmetric Yang-Mills theory

2009-11-03

arxiv.org/abs/0911.0595v1

PoS LAT2009:268,2009

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, talk presented at The XXVII International Symposium on Lattice Field Theory, July 26-31 2009, Peking University, Beij

Scientific paper

Results of a numerical simulation concerning the low-lying spectrum of four-dimensional N=1 SU(2) Supersymmetric Yang-Mills (SYM) theory on the lattice with light dynamical gluinos are reported. We use the tree-level Symanzik improved gauge action and Wilson fermions with stout smearing of the gauge links in the Wilson-Dirac operator. The configurations are produced with the Two-Step Polynomial Hybrid Monte Carlo (TS-PHMC) algorithm. We performed simulations on lattices up to a size of 24^3x48 at \beta=1.6. Using QCD units with the Sommer scale being set to r_0=0.5 fm, the lattice spacing is about a~0.09 fm, and the spatial extent of the lattice corresponds to 2.1 fm to control finite size effects. At the lightest simulated gluino mass our results indicate a mass for the lightest gluino-glue bound state, which is considerably heavier than the values obtained for its possible superpartners. Whether supermultiplets are formed remains to be studied in upcoming simulations.

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