Person: Jannes, Gil
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First Name
Gil
Last Name
Jannes
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Ciencias Económicas y Empresariales
Department
Economía Financiera, Actuarial y Estadística
Area
Estadística e Investigación Operativa
Identifiers
6 results
Search Results
Now showing 1 - 6 of 6
Item The trans-Planckian problem as a guiding principle(Journal of high energy physics, 2011) Barbado, L. C.; Barceló, C.; Garay Elizondo, Luis Javier; Jannes, GilWe use the avoidance of the trans-Planckian problem of Hawking radiation as a guiding principle in searching for a compelling scenario for the evaporation of black holes or black-hole-like objects. We argue that there exist only three possible scenarios, depending on whether the classical notion of long-lived horizon is preserved by high-energy physics and on whether the dark and compact astrophysical objects that we observe have long-lived horizons in the first place. Along the way, we find that i) a theory with high-energy superluminal signalling and a long-lived trapping horizon would be extremely unstable in astrophysical terms and that i i) stellar pulsations of objects hovering right outside but extremely close to their gravitational radius can result in a mechanism for Hawking-like emission.- Project number: 245
Item Big data en educación II: metodologías adaptativas en el proceso de enseñanza-aprendizaje desde el diagnóstico del estudiante(2019) Hernández Estrada, Adolfo; García Pérez, Enrique; Fernández-Cid Enríquez, Matilde; Vela Pérez, María; Peñaloza Figueroa, Juan Luis; Martínez Rodríguez, María Elena; Arteaga Martínez, Blanca; Macías Sánchez, Jesús; Martín Apaolaza, Nirian; Fernández-Crehuet Santos, José María; Pérez Martín, María; Mateos-Aparicio Morales, Gregoria; Fernández Molina, María Elia; Dorado Sánchez, Juan; Ruozzi López, Alberto; Martíns Pinto, Ana Rita; Martínez de La Fuente, Jorge Iván; Andrés García, Ángel de; Carrasco Pradas, Mª Desamparados; Álvarez Sáez, Manuel; Ferrer Caja, José María; Aparicio Sánchez, María Del Socorro; Barreal Pernas, Jesús; Jannes, Gil Item Conceptual Challenges on the Road to the Multiverse(Universe, 2019) Alonso Serrano, Ana; Jannes, GilThe current debate about a possible change of paradigm from a single universe to a multiverse scenario could have deep implications on our view of cosmology and of science in general. These implications therefore deserve to be analyzed from a fundamental conceptual level. We briefly review the different multiverse ideas, both historically and within contemporary physics. We then discuss several positions within philosophy of science with regard to scientific progress, and apply these to the multiverse debate. Finally, we construct some key concepts for a physical multiverse scenario and discuss the challenges this scenario has to deal with in order to provide a solid, testable theory.Item Hawking versus Unruh effects, or the difficulty of slowly crossing a black hole horizon(Journal of High Energy Physics, 2016) Barbado, Luis C.; Barceló, Carlos; Garay Elizondo, Luis Javier; Jannes, GilWhen analyzing the perception of Hawking radiation by different observers, the Hawking effect becomes mixed with the Unruh effect. The separation of both effects is not always clear in the literature. Here we propose an inconsistency-free interpretation of what constitutes a Hawking effect and what an Unruh effect. An appropriate interpretation is important in order to elucidate what sort of effects a detector might experience depending on its trajectory and the state of the quantum field. Under simplifying assumptions we introduce an analytic formula that separates these two effects. Armed with the previous interpretation we argue that for a free-falling detector to cross the horizon without experiencing high-energy effects, it is necessary that the horizon crossing is not attempted at low velocities.Item Quantum non-gravity and stellar collapse(Foundations of physics, 2011) Barceló, Carlos; Garay Elizondo, Luis Javier; Jannes, GilObservational indications combined with analyses of analogue and emergent gravity in condensed matter systems support the possibility that there might be two distinct energy scales related to quantum gravity: the scale that sets the onset of quantum gravitational effects E-B ( related to the Planck scale) and the much higher scale E-L signalling the breaking of Lorentz symmetry. We suggest a natural interpretation for these two scales: E-L is the energy scale below which a special relativistic spacetime emerges, E-B is the scale below which this spacetime geometry becomes curved. This implies that the first 'quantum' gravitational effect around E-B could simply be that gravity is progressively switched off, leaving an effective Minkowski quantum field theory up to much higher energies of the order of E-L. This scenario may have important consequences for gravitational collapse, inasmuch as it opens up new possibilities for the final state of stellar collapse other than an evaporating black hole.Item La narrativa como herramienta docente dentro de la gamificación de la estadística en el Grado en Turismo(Digital Education Review, 2019) Barreal Pernas, Jesús; Jannes, GilLa gamificación consiste en ludificar los contenidos de una determinada materia o asignatura a través de dinámicas, mecánicas y componentes. Con este proceso se puede lograr una mayor motivación e implicación del alumno, así como fomentar el desarrollo de competencias y del aprendizaje autónomo. El presente trabajo describe el proceso de implementación de esta herramienta para la asignatura “Estadística Aplicada al Sector Turístico” del Grado en Turismo con el objetivo de lograr presentar un proceso formativo dinámico y atractivo para el alumno. No obstante, se elabora desde un punto transversal que permita su implementación en asignaturas similares de enseñanzas superiores de grado. En más detalle, se desarrolla una narrativa entorno a la promoción profesional del alumno dentro de una empresa hotelera ficticia donde irá alcanzando mayor rango profesional a medida que avanza el juego y va superando una serie de pruebas/eventos. Esta narrativa fomenta el interés intrínseco en la actividad por parte del alumno, al mismo tiempo que refuerza la utilidad del propio juego de cara a futuras experiencias profesionales.