Geodesic Diagrams, Gravitational Interactions & OPE Structures

We give a systematic procedure to evaluate conformal partial waves involving symmetric tensors for an arbitrary CFT$_d$ using geodesic Witten diagrams in AdS$_{d+1}$. Using this procedure we discuss how to draw a line between the tensor structures in the CFT and cubic interactions in AdS. We contrast this map to known results using three-point Witten diagrams: the maps obtained via volume versus geodesic integrals differ. Despite these differences, we show how to decompose four-point exchange Witten diagrams in terms of geodesic diagrams, and we discuss the product expansion of local bulk fields in AdS.Comment: typos corrected, references adde

Theoretical calculations of an osmium molecular switch

Indexación: Web of Science; Scielo.ABSTRACT We have investigated the molecular, electronic and optical properties of the [Os(tpy-py)2]2+ complex (tpy-py = 4'-(4-pyridyl)-2,2':6',2"-terpyridine) and its protonated derivative [Os(tpy-pyH)2]4+ through Density Functional Relativistic calculations including Scalar and Spin Orbit corrections. The molecular geometry of the parent complex is not strongly modified by the protonation at the basic nitrogen atoms of the pyridine moieties of the terpyridine ligands in the complex. On the other hand, the optical properties of these complexes can be controlled by a change in the chemical acid-base environment, converting them into suitable materials to act as molecular switches or pH sensor devices.http://ref.scielo.org/54hzc

Measuring the Pro-Activity of Software Agents

Despite having well-defined characteristics, software agents do not have a developed set of measures defining their quality. Attempts at evaluating software agent quality have focused on some agent aspects, like the development process, whereas others focusing on the agent as a software product have basically adopted measures associated with other software paradigms, like procedural and object-oriented concepts. Here we propose a set of measures for evaluating software agent pro-activity, the software agent's goal-driven behavioral ability to take the initiative and satisfy its goal

Tele-Nothingness and Reality-Show Rule: The (An)aesthetics of Groundhog Day and its picnolepsic anecdotes

Vivimos en una intimidad sometida al impacto continuo de los medios de comunicación, en un clima de “evaporación estética” y de “participación veloz” que propicia que la cultura se convierta en un despliegue de efectos especiales. Tenemos una falsa sensación de propiedad transmediática, pero nuestras sensaciones son excitadas hasta el extremo por la “cultura digital” y lo genuinamente cotidiano pierde el poder de llegar hasta nosotros. En el imperio de lo hipervisible, cuando la televisión encuentra su condición esencial de vida en directo "monitorizada", la misma insatisfacción se ha convertido en una mercancía y el reality show fortifica la voluntad de patetismo, proponiendo un modelo de reclusión para el éxito, que también se refleja en la producción artísticaWe live in a media continually besieged privacy, in a climate of aesthetic evaporation, urged to “answer” or participate” quickly. This causes culture to turn into a deployment of special effects, and nothing else. We have a false feeling of transmedia property, but our sensations are taken to the extreme by digital culture, and genuine everyday life ceases to reach us. In the Empire of the hipervisible, when tv meets its essential condition of “monitored real life”, insatisfaction itself becomes a commodity and reality shows strengthen a pathos will, introducing a “reclusion for success” model which can also be found in artistic productio