Mesons at large Nc from lattice QCD
نویسندگان
چکیده
We calculate the pion and ρ meson masses in quenched SU(N) gauge theories for N = 2, 3, 4 and 6. Extrapolating these results to the chiral and large-N limits, we find mρ = (1.670± 0.024) √ σ = (741± 11) MeV for the ρ meson mass at a fixed lattice spacing a ≈ 0.093 fm. We estimate a continuum value, mρ = (786 ± 22) MeV, where we use the value σ = 1 GeV/fm ≈ (444 MeV) for the string tension. We find 1/N corrections to be small and we compare our results to predictions from AdS/QCD.
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