Numerical study of periodic instanton configurations in two-dimensional abelian Higgs theory
نویسنده
چکیده
Numerical minimization of the euclidean action of the two-dimensional abelian Higgs model is used to construct periodic instantons, the euclidean field configurations with two turning points describing transitions between the vicinities of topologically distinct vacua. Periodic instantons are found at any energy (up to the sphaleron energy Esp h ) and for a wide range of parameters of the theory. We obtain the dependence of the action and the energy of the periodic instanton on its period; these quantities directly determine the probability of certain multiparticle scattering events.
منابع مشابه
One-loop corrections to the instanton transition in the two-dimensional Abelian Higgs model.
We present an evaluation of the fluctuation determinant which appears as a prefactor in the instanton transition rate for the two-dimensional Abelian Higgs model. The corrections are found to change the rate at most by a factor of 2 for 0.4 < MH/MW < 2.0. e-mail [email protected]
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