ar X iv : h ep - l at / 0 11 00 26 v 1 9 O ct 2 00 1 1 A lattice study of the Faddeev – Niemi effective action ∗
نویسندگان
چکیده
We perform a lattice analysis of the Faddeev–Niemi effective action conjectured to describe the low energy sector of SU (2) Yang-Mills theory. We generalize the effective action such that it contains all operators built from a unit color vector field n with O(3) symmetry and maximally four derivatives. To avoid the presence of Goldstone bosons, we include explicit symmetry breaking terms parametrized by an external field h of mass–dimension two. We find a mass gap of the order of 1.5 GeV.
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