Onset of instability for a class of nonlinear lagrangian systems |
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Authors: | EW Laedke KH Spatschek M Wilkens |
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Institution: | Fachbereich Physik, Universität Essen, D-4300 Essen, Fed. Rep. Germany |
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Abstract: | For systems of real and complex (charged) fields derivable from Lorentz-invariant lagrangian densities a general criterion for dynamical instability of lump solutions is presented. This criterion complements the well-known Q-theorem for stability. |
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