MG14 - Talk detail |
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Participant |
Fodor, Gyula | |||||||
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Institution |
Observatoire de Paris - 5, place Jules Janssen, - Meudon - - France | |||||||
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Session |
BS1 |
Accepted |
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Order |
Time |
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Talk |
Oral abstract |
Title |
Scalar Breathers with Negative Cosmological Constant | |||||
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Abstract |
Time-periodic and spatially localized breather-type solutions with spherical symmetry are investigated in a free massless scalar field theory coupled to Einstein's gravity with a negative cosmological constant. Using a spectral code the phase space of breather solutions is explored in detail for d=3 and d=4 spatial dimensions. It is found that there are discrete families of solutions indexed by an integer and by their frequency. Using a time evolution code these AdS breathers are found to be stable for up to a critical central density, in analogy to boson stars. Using an analytical perturbative expansion small amplitude breathers are worked out for arbitrary dimensions. |
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