3,134 research outputs found
Al centro Claudio Marino Moretti precede Alessio Vlad sulla destra durante il concerto dell'Orchestra Sinfonica Nazionale della Rai
No full textClaudio Marino Moretti, maestro del coroAlessio Vlad, direttor
Prove di dialogo: Moretti e la critica italiana
No full textL'articolo ripercorre la ricezione critica del cinema di Nanni Moretti prestando particolare attenzione ai processi di canonizzazione e istituzionalizzazione che hanno investito questo autore
In margine a un libro di Franco Moretti. Lo spazio geografico e la letteratura
No full textDiscussione sul rapporto tra letteratura, analisi spaziale e cartografia, a partire dall'Atlante del romanzo europeo di Franco Moretti
Per Claudio Cesa. Una giornata di studi
No full textL'articolo sintetizza le relazioni presentate in occasione della giornata di studi dedicata, il 6 dicembre 2017, dalla Scuola Normale Superiore a Claudio Cesa, suo allievo e insigne professore. Oggetto delle relazioni, i suoi anni giovanili (M. Moretti), i suoi studi su Fichte (C. De Pascale), Schelling (G. Cantillo), Feuerbach (F. Tomasoni), sullo Hegel politico (M. Mori), sulla filosofia italiana dell'Ottocento (A. Savorelli), e il suo modo di intendere la storia della filosofia (G. Bonacina)The article summarizes the papers presented at the symposium devoted, on December 6th 2017, to the scholarly work of Claudio Cesa by the Scuola Normale Superiore, where Cesa studied and eminently taught, Subject of the papers, his early years (M. Moretti), his research on Fichte (C. De Pascale), Schelling (G. Cantillo), Feuerbach (F. Tomasoni), on Hegel's political thought (M. Mori), on the Italian philosophy of the 19th Century (A. Savorelli), along with his way of conceiving history of philosophy (G. Bonacina
Rigorous steps towards holography in asymptotically flat spacetimes
No full textScalar QFT on the boundary J+ at null infinity of a general asymptotically flat 4D spacetime is constructed using the algebraic approach based on Weyl algebra associated to a BMSinvariant symplectic form. The constructed theory turns out to be invariant under a suitable strongly continuous unitary representation of the BMS group with manifest meaning when the fields are interpreted as suitable extensions to J+ of massless minimally coupled fields propagating in the bulk. The group theoretical analysis of the found unitary BMS representation proves that such a field on J+ coincides with the natural wave function constructed out of the unitary BMS irreducible representation induced from the little group, the semidirect product between SO(2) and the two-dimensional translations group. This wave function is massless with respect to the notion of mass for BMS representation theory. The presented result proposes a natural criterion to solve the long standing problem of the topology of BMS group. Indeed the found natural correspondence of quantum field theories holds only if the BMS group is equipped with the nuclear topology rejecting instead the Hilbert one. Eventually some theorems towards a holographic description on J+ of QFT in the bulk are established at level of C* algebras of fields for strongly asymptotically predictable spacetimes. It is proved that preservation of a certain symplectic form implies the existence of an injective *-homomorphism from the Weyl algebra of fields of the bulk into that associated with the boundary J+. Those results are, in particular, applied to 4D Minkowski spacetime where a nice interplay between Poincaré invariance in the bulk and BMS invariance on the boundary at null infinity is established at level of QFT. It arises that, in this case, the *- homomorphism admits unitary implementation and Minkowski vacuum is mapped into the BMS invariant vacuum on J+
Postal de Claudio Vivas a Maruja Vieira, junio 23 de 1955
No full textPostal de Claudio Vivas a Maruja Vieira, felicitándola por el reconocimiento que le fue otorgado a la autora de poemasPostcard from Claudio Vivas to Maruja Vieira, congratulating her for the recognition given to the author of poems.Publicación, fondo Maruja Vieira, carpeta 1, folio
Convivenza interetnica e territorio
No full textIl ruolo del territorio nella definizione e persistenza di minoranze "etniche
Hadamard states from light-like hypersurfaces
No full textThis book provides a rather self-contained survey of the construction of Hadamard states for scalar field theories in a large class of notable spacetimes, possessing a (conformal) light-like boundary. The first two sections focus on explaining a few introductory aspects of this topic and on providing the relevant geometric background material. The notions of asymptotically flat spacetimes and of expanding universes with a cosmological horizon are analysed in detail, devoting special attention to the characterization of asymptotic symmetries. In the central part of the book, the quantization of a real scalar field theory on such class of backgrounds is discussed within the framework of algebraic quantum field theory. Subsequently it is explained how it is possible to encode the information of the observables of the theory in a second, ancillary counterpart, which is built directly on the conformal (null) boundary. This procedure, dubbed bulk-to-boundary correspondence, has the net advantage of allowing the identification of a distinguished state for the theory on the boundary, which admits a counterpart in the bulk spacetime which is automatically of Hadamard form. In the last part of the book, some applications of these states are discussed, in particular the construction of the algebra of Wick polynomials. This book is aimed mainly, but not exclusively, at a readership with interest in the mathematical formulation of quantum field theory on curved backgrounds
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