We perform a quasi-normal mode analysis of black hole configurations in Bose-Einstein condensates (BEC). In this analysis we use the full Bogoliubov dispersion relation, not just the hydrodynamic or geometric approximation. We restrict... more
A theoretical study on low-temperature structural phase transitions is presented, in which both phonon-like and relaxation order-parameter dynamics are contemplated. While the first limiting case has been considered previously, the second... more
We point out that the repeatedly reported glass-like properties of crystalline materials are not necessarily associated with localized (or quasilocalized) excitations. In real crystals, optical and short-wavelength acoustical vibrations... more
Los poderes locales que consiguieron perdurar más allá de la conquista gracias a los pactos alcanzados con los recién llegados se revelan como agentes activos, y comprometidos, en el nuevo tablero histórico, incluso en aquellos casos en... more
Con motivo del centenario de la publicación del libro de Manuel Gómez-Moreno "Iglesias mozárabes. Arte español de los siglos IX al XI" la biblioteca Tomás Navarro Tomás (CCHS-CSIC) celebra una jornada científica que tendrá lugar el 15 de... more