Listar Centro de Física Fundamental (CFF) por título

Mostrando ítems 8-27 de 144

    • Close to the edge: hierarchy in a double braneworld 

      Guerrero, Rommel; Pantoja, Nelson; Melfo, Alejandra; Rodriguez, Omar (SABER ULA, 2007-03-19)
      Close to the edge: hierarchy in a double braneworld. (Guerrero, Rommel; Melfo, Alejandra; Pantoja, Nelson and Rodriguez, R. Omar) Abstract We show that the hierarchy between the Planck and the weak scales can follow ...

    • 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 ...

    • 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 2008, Colombia, 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 ...

    • Comment on Ricci Collineations of static spherically symmetric spacetimes 

      Núñez, Luis; Percoco, Umberto; Contreras, Gerardo; Bertolotti, Ricardo; Carot, Jaume (SABER ULA, 2006-01-26)
      Comment on Ricci Collineations of static spherically symmetric spacetimes (Núñez, Luis; Contreras, Gerardo; Percoco, Umberto; Bertolotti, Ricardo; Carot, J.) Abstract We present a counter example to a theorem given ...

    • 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 ...

    • 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 ...

    • 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 ...

    • 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, ...

    • Contribution to the commissioning of the ATLAS calorimeter electronics calibration 

      Cárdenas G., Antonio L. (SABER ULA, 2008-08-07)
      Contribution to the commissioning of the ATLAS calorimeter electronics calibration (Cárdenas G., Antonio L.)

    • Cosmos y cosmología 

      Rago, Héctor (SABER ULA, 2003-07-14)
      La traducción de este artículo fue publicada en el libro: Astrobiology: Origins from Big bang to Civilisation, Editado por Julián Chela-Flores, Guillermo A. Lemarchand y John Oró, Klwer Academis Press, 2000.

    • Covariant duality symmetric actions 

      Khoudeir, Adel; Pantoja, Nelson (SABER ULA, 2005-01-06)
      Covariant duality symmetric actions (Khoudeir, Adel; Pantoja, Nelson) Abstract A manifestly Lorentz and diffeomorphism invariant form for the abelian gauge field action with local duality symmetry of Schwarz and ...

    • Cracking of self-gravitating compact objects with local and non local equations of state. 

      Abreu, Henso; Hernández G., Héctor; Núñez, Luis (SABER ULA, 2006-12-28)
      Cracking of self-gravitating compact objects with local and non local equations of state. (Abreu, Henso; Hernández, Hector y Núñez, Luis) Abstract We discuss the effect that small fluctuations of density and local ...

    • Crucial test of relativity theory: open currents and magnetic model of light. 

      Spavieri, Gianfranco; Erazo, Jesús; Sánchez, Arturo; Ayazo, José; Rodriguez, M. (SABER ULA, 2007-04-13)
      Crucial test of relativity theory: open currents and magnetic model of light. Spavieri, Gianfranco; Erazo, J.; Sanchez, A.; Ayazo, José and Rodriguez, M. Abstract Fundamental tests of special theory of relativity (STR) ...

    • Curvature singularity of the distributional BTZ black hole geometry 

      Pantoja, Nelson; Rago, Héctor; Rodríguez, R.O. (SABER ULA, 2005-05-25)
      Curvature singularity of the distributional BTZ black hole geometry Pantoja, Nelson; Rago, Héctor; Rodríguez, R.O. Abstract For the non-rotating BTZ black hole, the distributional curvature ...

    • Diffuse gas condensation induced by variations of the ionizing flux 

      Parravano, Antonio; Pech, Catherine (SABER ULA, 2005-01-06)
      Diffuse gas condensation induced by variations of the ionizing flux (Parravano, Antonio; Pech, Catherine) Abstract The variation of an ionizing flux as a mechanism to stimulate the condensation of a diffuse gas is ...

    • Discovery of the bright trans-Neptunian object 2000 EB173 

      Ferrín, Ignacio; Rabinowitz, David; Deng, Ming; Snyder, J.; Ellman, N.; Vicente, B.; Rengstorf, A.; Depoy, D.; Salim, Samir; Andrews, P.; Bailyn, Charles D.; Baltay, C.; Briceño, César; Coppi, Paolo S.; Schaefer, Bradley E.; Emmet, W.; Oemler, Augustus; Sabbey, Chris N.; Shin, J.; Sabatino, Sofia; Van Altena, William F.; Vivas, K.; Abad, C.; Bongiovanni, A.; Bruzual, Gustavo; Della Prugna, F.; Herrera, D.; Magris, Gladis; Mateu, J.; Pacheco, R.; Sánchez, Ge.; Sánchez, Gu.; Schenner, H.; Stock, Jürgen; Vieira, K.; Fuenmayor, Francisco J.; Hernández, J.; Naranjo V., Orlando A.; Rosenzweig, Patricia; Secco, C.; Spavieri, Gianfranco; Gebhard, M.; Honeycutt, H.; Mufson, S.; Musser, James A.; Pravdo, Steven H.; Helin, E.; Lawrence, K. (SABER ULA, 2004-06-17)
      Discovery of the bright trans-Neptunian object 2000 EB173 (Ferrin, Ignacio; Rabinowitz, David; Deng, Ming; Snyder, J.; Ellman, N.; Vicente, B.; Rengstorf, A.; Depoy, D.; Salim, Samir; Andrews, P.; Bailyn, Charles D.; ...

    • Distributional sources in general relativity: 

      Pantoja, Nelson; Rago, Héctor (SABER ULA, 2003-07-04)
      Distributional sources in general relativity: Two point-like examples revisited (Pantoja, Nelson; Rago, Hector) Abstract A regularization procedure, that allows one to relate singularities of curvature to those ...

    • E-investigación: una nueva manera de producir conocimiento. 

      Núñez, Luis (SABER ULA, 2007-07-03)
      E-investigación: una nueva manera de producir conocimiento. (Núñez, Luis) Resumen Se describen algunas experiencias en e-investigación de en Física de Altas Energías, Astrofísica y Química. Luego se hace una descripción ...

    • E-science initiatives in Venezuela. 

      Chaves, Juan Luis; Díaz, Gilberto; Hamar, Vanessa; Isea, Raúl; Rojas, Freddy; Ruiz, Nicolás; Torréns Heeren, Rodrigo J.; Uzcátegui, M.; Flórez López, Julio; Hoeger, Herbert; Mendoza, Claudio; Núñez, Luis (SABER ULA, 2008-06-09)
      E-science initiatives in Venezuela. (Chaves, Juan Luis; Díaz, Gilberto; Hamar, Vanessa; Isea, Raúl; Rojas, Freddy; Ruiz, Nicolás; Torréns Heeren, Rodrigo J.; Uzcátegui, M.; Flórez López, Julio; Hoeger, Herbert; Mendoza, ...

    • 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 ...