Physics – High Energy Physics – High Energy Physics - Lattice
Scientific paper
2010-08-30
Phys.Rev.D82:114510,2010
Physics
High Energy Physics
High Energy Physics - Lattice
8 pages, 5 EPS figures
Scientific paper
10.1103/PhysRevD.82.114510
We measure on the lattice the quenched pseudoscalar and vector meson masses at a fixed value of the lattice spacing for SU(N) gauge theory with fermions in the adjoint, in the symmetric and in the antisymmetric representations of the gauge group. Simulations are performed for N=3,4,6 in all those representations, with the addition of N=2 for the adjoint representation. We illustrate a strategy for separating the even from the odd-power contributions in 1/N in the masses. Using this technique, we extrapolate the vector mass to the large-N limit in the chiral region and show that at N = infty this mass is the same within errors in all the three representations, as predicted by orientifold planar equivalence. Possible implications of our investigation for studying orientifold planar equivalence in the dynamical case are discussed.
Lucini Biagio
Moraitis Gregory
Patella Agostino
Rago Antonio
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