Articulos, Pre-prints producidas en Centro de Física Fundamental (CFF)

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  • Colapso gravitacional radiativo esféricamente simétrico en la aproximación poscuasiestática 

    Navarro, A. A.; Núñez, Luis; Rueda H., Jorge A.; Sanabria Gómez, J. D. (Revista Colombiana de Física, Vol. 40, No.1, Abril 2008Colombia, 2008-04)
    Se describe la evolución del radio de un objeto esféricamente simétrico en fase de colapso gravitacional radiante en el marco de la relatividad general, usando el factor de flujo de radiación, el factor variable de Eddington ...
  • Red bioclimática del estado Mérida: repositorio institucional de datos ambientales 

    Contreras Zambrano, Hilda Yelitza; Méndez P., Zulay V.; Torréns Heeren, Rodrigo J.; Núñez, Luis (SABER ULA, 2008-08-29)
    Red bioclimática del estado Mérida: repositorio institucional de datos ambientales. (Contreras Zambrano, Hilda Yelitza; Méndez, Zulay V.; Torréns Heeren, Rodrigo J. y Núñez, Luis) Resumen Presentamos la experiencia ...
  • E-science perspectives in Venezuela. 

    Díaz, Gilberto; Flórez López, Julio; Hamar, Vanessa; Hoeger, Herbert; Mendoza, Claudio; Méndez P., Zulay V.; Núñez, Luis; Ruiz, Nicolás; Torréns Heeren, Rodrigo J.; Uzcátegui, M. (SABER ULA, 2008-08-29)
    E-science perspectives in Venezuela. (Díaz, Gilberto; Flórez López, Julio; Hamar, Vanessa; Hoeger, Herbert; Mendoza, Claudio; Mendez, Z.; Núñez, Luis; Ruiz, Nicolás; Torréns Heeren, Rodrigo J.; Uzcátegui, M.) Abstract We ...
  • Efecto de las variaciones de la presión térmica sobre el estado del gas interestelar 

    Mehrer Terradillos, Mariana; Parravano, Antonio (SABER ULA, 2008-07-25)
    Efecto de las variaciones de la presión térmica sobre el estado del gas interestelar. (Mehrer Terradillos, Mariana y Parravano, Antonio) Resumen Se estudió el cambio del estado termoquímico del gas interestelar cuando ...
  • Scalar field spacetimes 

    Carot, Jaume; Collinge, Magdalena M. (SABER ULA, 2008-07-02)
    Scalar field spacetimes (Carot, Jaume; Collinge, Magdalena M.) Abstract Scalar field spacetimes are considered with a view towards their applications in cosmology. Some results existing in the literature are reviewed ...
  • Lie Groups of Conformal Motions acting on Null Orbits 

    Carot, Jaume; Coley, A. A.; Sintes, A. M. (SABER ULA, 2008-07-02)
    Lie Groups of Conformal Motions acting on Null Orbits (Carot, Jaume; Coley, A. A.; Sintes, A. M.) Abstract Space-times admitting a 3-dimensional Lie group of conformal motions acting on null orbits containing a ...
  • Conformal symmetries in warped manifolds. 

    Apostolopoulos, Pantelis S.; Carot, Jaume (SABER ULA, 2008-07-02)
    Conformal symmetries in warped manifolds (P. S., Apostolopoulos; Carot, Jaume.) Abstract The existence of a Conformal Vector Field (CVF) is studied in the important class of warped manifolds of arbitrary dimension ...
  • Conformally reducible 2 + 2 spacetimes 

    Carot, Jaume; Tupper, Brian O. J. (SABER ULA, 2008-07-02)
    Conformally reducible 2 + 2 spacetimes (Carot, Jaume; Tupper, Brian O. J.) Abstract Spacetimes which are conformal to 2 + 2 reducible spacetimes are considered. We classify them according to their conformal algebra, ...
  • Homothetic perfect fluid spacetimes 

    Carot, Jaume; Sintes, A. M. (SABER ULA, 2008-07-02)
    Homothetic perfect fluid spacetimes (Carot, Jaume; Sintes, A. M.) Abstract A brief summary of results on homotheties in general relativity is given, including general information about spacetimes admitting an ...
  • On the geometry of warped spacetimes 

    Carot, Jaume; da Costa, J. (SABER ULA, 2008-07-02)
    On the geometry of warped spacetimes (Carot, Jaume; da Costa, J.) Abstract An invariant characterization of warped spacetimes is given and a classification scheme for them is proposed. Some results on the curvature ...
  • Energy-momentum types of warped spacetimes 

    Carot, Jaume; Haddow, Barry M. (SABER ULA, 2008-07-02)
    Energy-momentum types of warped spacetimes (Carot, Jaume; Haddow, Barry M. Abstract The possible energy–momentum types of warped product pacetime are investigated using the classification given by Carot and da Costa.
  • Matter collineations: The inverse "symmetry inheritance" problem. 

    Carot, Jaume; da Costa, J.; Vaz, E. G. L. R. (SABER ULA, 2008-07-02)
  • Some developments on axial symmetry 

    Carot, Jaume (SABER ULA, 2008-07-02)
    Some developments on axial symmetry (Carot, Jaume) Abstract The definition of axial symmetry in general relativity is reviewed, and some results concerning the geometry in a neighbourhood of the axis are derived. ...
  • Conformal symmetry inheritance in null fluid spacetimes 

    Carot, Jaume; Tupper, Brian O. J.; Hall, J. S.; Keane, A. J.; Coley, A. A. (SABER ULA, 2008-07-02)
    Conformal symmetry inheritance in null fluid spacetimes (Carot, Jaume; Keane, A. J.; Coley, A. A.; Hall, J. S.; Tupper, Brian O. J.) Abstract We define inheriting conformal Killing vectors for null fluid spacetimes ...
  • Conformal symmetries in null Einstein-Maxwell fields 

    Carot, Jaume; Hall, J. S. (SABER ULA, 2008-07-02)
    Conformal symmetries in null Einstein-Maxwell fields (Carot, Jaume; Hall, J. S.) Abstract It is shown that if a null Einstein-Maxwell spacetime admifs a proper conformal vector field it must either be a (generalized ...
  • Scalar field cosmologies: a dynamical systems study 

    Carot, Jaume; Collinge, Magdalena M. (SABER ULA, 2008-07-02)
    Scalar field cosmologies: a dynamical systems study (Carot, Jaume; Collinge, Magdalena M.) Abstract Inhomogeneous G2 solutions whose material content can be modelled by a scalar field are considered with a view towards ...
  • Generalised soliton solutions of the Weyl class 

    Verdaguer, Enric; Carot, Jaume (SABER ULA, 2008-07-02)
    Generalised soliton solutions of the Weyl class (Verdaguer, Enric ; Carot, Jaume) Abstract The whole family of generalised soliton solutions of the Weyl class for Einstein's equations in vacuum is considered. A ...
  • On the definition of cylindrical symmetry 

    Carot, Jaume; Senovilla, José M. M.; Vera, Raül (SABER ULA, 2008-07-02)
    On the definition of cylindrical symmetry (Carot, Jaume; Senovilla, José M. M.; Vera, Raül) Abstract The standard definition of cylindrical symmetry in general relativity is reviewed. Taking the view that axial ...
  • Self-similar static solutions admitting a 2-space of constant curvature 

    Carot, Jaume; Sintes, A. M. (SABER ULA, 2008-07-02)
    Self-similar static solutions admitting a 2-space of constant curvature (Carot, Jaume; Sintes, A. M.) Abstract A recent result by Haggag and Hajj-Boutros is reviewed within the framework of self-similar spacetimes, ...
  • Clusters de PCs. 

    Núñez, Luis; Díaz, Gilberto; Hoeger, Herbert (SABER ULA, 2008-06-09)
    Clusters de PCs. (Núñez, Luis; Díaz, Gilberto; Hoeger, Herbert.) Resumen Los Clusters de PCs se hicieron populares con el proyecto Beowulf. La idea consiste en armar un máquina, con gran poder de computo, interconectando ...

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