MGAT8 - Alternative Theories |
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Speaker |
Fodor, Gyula |
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Co-autors |
P. Forgacs, Z. Horvath and M. Mezei |
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Talk Title |
Almost periodic localized states in a dilaton model |
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Abstract |
Extremely long-living spatially localized oscillating states can be numerically observed in a theory where a massive real scalar field is coupled to a massless dilaton field. These objects are closely related both to flat background oscillons and to general relativistic oscillatons. A small-amplitude expansion is applied to describe the core region, and the scaling properties are shown to be the same as those for oscillatons. However, unlike the general relativistic case, there is no unstable branch for high amplitudes in the dilaton theory. The nonperturbatively small energy loss rate is calculated by complex extension of the Fourier mode equations and applying Borel summation. |
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