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|Type:||Artigo de periódico|
|Title:||Quasinormal Modes For The Scattering On A Naked Reissner-nordström Singularity|
|Abstract:||What should be the quasinormal modes associated with a space-time that contains a naked singularity instead of a black hole? In the present work we address this problem by studying the scattering of scalar fields on a curved background described by a Reissner-Nordström space-time with |q|>m. We show that there is a qualitative difference between cases with 1<q2/m29/8 and cases with q2/m29/8. We discuss the necessary conditions for the well-posedness of the problem and present results for the low damped modes in the low l and large l limit. We also consider the asymptotically highly damped quasinormal modes. We present strong evidence that such modes are absent in the case of a naked Reissner-Nordström singularity, corroborating recent conjectures relating them to classical and quantum properties of horizons. © 2012 American Physical Society.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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