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Browsing by Autor "U. Percoco"

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    Perturbaciones de carga en objetos compactos
    (2007) Joany Manjarrés; Luis A. Núñez; U. Percoco
    The effect of perturbations of charge on the stability of compact objects is studied. It is shown that, at least for the equations of state considered, the stability of charged matter configurations is very sensible to these fluctuations.
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    The Classical Isotropic bi-Dimensional Oscilator in the Eisenhart Formulation of Classical Mechanics
    (2007) U. Percoco; Luis A. Núñez; M. Zambrano
    De acuerdo con la Teoría de la Relatividad General, el movimiento de partículas por acción de su inercia y la gravedad es descrito por geodésicas en el espacio-tiempo. Utilizamos la formulación Geométrica de Eisenhart de la Mecánica Clásica para establecer una correspondencia entre geodésicas y trayectorias en el espacio de fases del oscilador clásico\nisótropo. Se presentan los vectores de Killing y las constantes de movimiento asociadas, se comparan con las constantes de movimiento no noetheriano calculadas por S. Hojman y colaboradores.
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    Vectores de Killing y cantidades conservadas para espacio-tiempos cuasi-esféricos
    (2007) J. Carot; Y. Parra; Luis A. Núñez; U. Percoco
    The warped space-time type B with axial symmetry and quasi-spherical is explored. This produces a line element that admits killing vector of the family 1-type proposed by J. Flores et al. [1]. The associated conserved amounts with these vectors are found and therefore a first integral of the geodesic equations which describe fres particle inmerse in such space-time is obtained. \n

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