Time evolution of spinor perturbations in regular black holes
- Autores: O. Pavel Fernández Piedra, J. Bernal Castillo, Fidel Sosa Núñez, Yulier Jiménez Santana
- Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 61, Nº. 6, 2015, págs. 400-413
- Idioma: inglés
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Resumen
In this report we present results concerning the study of complete time evolution of massless fermion perturbations propagating in several four dimensional regular black holes space-times. The blackhole solution arises from coupling gravity with external matter sources, like nonlinear electrodynamics or some phantom fields. After numerical integration we obtain the time evolution profiles for fermion fields in this space-times. By fitting the numerical data, we compute the quasinormal frequencies that characterize the test field evolution at intermediary times, and for late times, we find power law tails, in strong similarity with usual results for nonregular blackholes. Quasinormal modes was also investigates using a WKB approach at six order beyond the eikonal limit, obtaining a good correspondence with the numerical calculated frequencies.
