1,721,106 research outputs found
Symmetry breaking in six dimensional flux compactification scenarios
No full textMotivated by the electroweak hierarchy problem, we consider theories with two extra dimensions in which the four-dimensional scalar fields are components of gauge boson in full space, namely the Gauge-Higgs unification framework. We briefly explain the basics features of "flux compactification", i.e. compactification in presence of a background (magnetic) flux. In particular we recall how chirality and symmetry breaking can be obtained in this context. More in details, we find and catalogue all possible degenerate zero-energy stable configurations in the case of trivial or non-trivial 't Hooft flux, for a SU(N) gauge theory on a torus. We describe the residual symmetries of each vacua and the four-dimensional effective spectrum in terms of continuous and discrete parameters, respectively
Il rilievo del costruito storico tra rappresentazione della ‘materia' e ‘intellegendi vis' (conoscenza) dell'opera
No full textThe debate about the restoration has seen the importance of consolidated representation of the "raw material" for the purpose of an intervention project on seniority. The dichotomy between "image" and "material" has given rise to various positions that had as its object the "monuments" of the past, reproduced in their original state assumed an
expression of an idealized image. Today seems to share the need to work defending the importance of the passage of time of the "stuff" that buildings are made of, matter who bears the marks of history. Therefore, plays a significant architectural relief not only for purposes of mere representation of the neutral "matter" but "intelligible face" knowledge) of the work that you recognize and transmit values to be preserved for future generations. Given these considerations, this paper will attempt to outline the specific in its essential and critical issues of importance to the restoration project
Complex interpolation and (n, d)-convexity.
No full textIt is shown that the property of (n, d)-convexity is stable under complex interpolation for a family
of Banach spaces
Le driving forces delle migrazioni internazionali e le principali rotte migratorie a scala mondiale
No full text
Geopolitica dell’accoglienza in Italia. Le domande di accoglienza nell’UE: l’Italia in un confronto internazionale
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