Lorentz invariance for mixed neutrinos

We show that a proper field theoretical treatment of mixed (Dirac) neutrinos leads to non-trivial dispersion relations for the flavor states. We analyze such a situation in the framework of the non-linear relativity schemes recently proposed by Magueijo and Smolin. We finally examine the experimental implications of our theoretical proposals by considering the spectrum and the end-point of beta decay in tritium.Comment: 8 pages, 4 figures. Presented at 2nd International Workshop DICE2004: From Decoherence and Emergent Classicality to Emergent Quantum Mechanics, Castello di Piombino, Tuscany, Italy, 1-4 Sep 200

Controlling services in a mobile context-aware infrastructure

Context-aware application behaviors can be described as logic rules following the Event-Control-Action (ECA) pattern. In this pattern, an Event models an occurrence of interest (e.g., a change in context); Control specifies a condition that must hold prior to the execution of the action; and an Action represents the invocation of arbitrary services. We have defined a Controlling service aiming at facilitating the dynamic configuration of ECA rule specifications by means of a mobile rule engine and a mechanism that distributes context reasoning activities to a network of context processing nodes. In this paper we present a novel context modeling approach that provides application developers and users with more appropriate means to define context information and ECA rules. Our approach makes use of ontologies to model context information and has been developed on top of web services technology

NNLO predictions for Z-boson pair production at the LHC

We present a calculation of the NNLO QCD corrections to Z-boson pair production at hadron colliders, based on the N-jettiness method for the real radiation parts. We discuss the size and shape of the perturbative corrections along with their associated scale uncertainties and compare our results to recent LHC data at $\sqrt{s}=13$ TeV.Comment: 19 pages, 2 Tables, 4 figures. Version to appear in JHE

Between “ghettos”, “safe spaces” and “gaytrification”: exploring the specificities of LGBT neighbourhoods in southern Europe

In recent decades, “LGBT neighbourhoods” or “gay Villages” have been gaining some prominence and particular characteristics within cities, representing safe spaces for the expression and negotiation of individual and collective identities as well as for the political affirmation of LGBT communities and queer identities. As other areas that have been the main drivers of urban revitalization of inner-cities, such as cultural and creative quarters or multicultural spaces, these territories distinguish for the social practices of their users and inhabitants, the specificities of their economic activity, or their contribute to creativity or social integration. More than community ghettos, these areas have been characterized by their openness and vibrancy, enhancing the coexistence of diverse lifestyles, trajectories and identities, but also by the contribution of LGBT people to the gentrification of these districts through their strong commercial, residential and symbolic presence. Drawing upon an empirical work developed in Lisbon (Príncipe Real district) and Madrid (Chueca district), based on in-depth interviews to LGBT residents and participant observation in the two neighbourhoods, this paper characterizes the main evolutionary trajectories and specificities of these two districts. An analysis is made confronting the characteristics and contingencies of these areas with other cases previously studied in literature, identifying the existence of notable differences and suggesting evidence of significant specificities, which can represent a “South European” approach to the reality of “Gay Villages”. Some generic principles for urban planning are drawn out from the analysis.info:eu-repo/semantics/publishedVersio

La réforme pénale et la réciprocité des droits

This letter deals with two major questions. The first shows how the “program” of criminology which emerged in the 19th century contributes to a neutralisation of the impact of discussions concerning human rights in the case of punishment. To do this, the author compares two paradigms of penal reform. The second question tries to clarify the relations established in Quebec between the rights of prisoners and abolitionist alternatives from 1975 on