Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2005-09-28
Physics
High Energy Physics
High Energy Physics - Theory
30 pages, 3 figures; in section 2, more explanations added and typos corrected
Scientific paper
The low energy effective theory of N=4 super-Yang-Mills theory on S^3 with an R-symmetry chemical potential is shown to be the lowest Landau level system. This theory is a holomorphic complex matrix quantum mechanics. When the value of the chemical potential is not far below the mass of the scalars, the states of the effective theory consist only of the half-BPS states. The theory is solved by the operator method and by utilizing the lowest Landau level projection prescription for the value of the chemical potential less than or equal to the mass of the scalars. When the chemical potential is below the mass, we find that the degeneracy of the lowest Landau level is lifted and the energies of the states are computed. The one-loop correction to the effective potential is computed for the commuting fields and treated as a perturbation to the tree level quantum mechanics. We find that the perturbation term has non-vanishing matrix elements that mix the states with the same R-charge.
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