MGAT3 - Theoretical Issues in GR |
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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 |
Energy loss rate of oscillatons |
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Abstract |
According to numerical simulations, general relativistic massive real scalar fields can form extremely long living oscillating localized objects, called oscillating soliton stars or oscillatons. We present a small-amplitude expansion to describe the core region of these configurations. To leading order we obtain the Schrodinger-Newton equations. However, the small-amplitude expansion is only an asymptotic one, and consequently misses a nonperturbatively small oscillating tail which is responsible for a tiny energy loss of oscillatons, making them non-exactly periodic. The energy loss rate is calculated by complex extension of the Fourier mode equations and applying Borel summation. |
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