A Possible Resolution of the U(1) and Strong CP Problems within Gluodynamics
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چکیده
We analyse the U(1) and strong CP problems in gluodynamics within a low energy dilaton/axion effective Lagrangian constructed by using low energy theorems. Within the effective Lagrangian technique, we find that the strong CP problem is automatically solved by a shift of the vacuum, analogously to what was recently found for supersymmetric models. As a result, the physical θ dependence disappears when a stable vacuum is chosen. Our construction preserves a resolution of the U(1) problem.
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تاریخ انتشار 1997