Il fascino oscuro Dell’inflazione
Alla scoperta della storia Dell’Universo
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Open AccessD3-brane supergravity solutions from Ricci-flat metrics on canonical bundles of Kähler–Einstein surfaces
D3 brane solutions of type IIB supergravity can be obtained by means of a classical Ansatz involving a harmonic warp factor, $$H(\textbf{y},\b...
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Article
Open AccessResolution à la Kronheimer of \(\mathbb {C}^3/\Gamma \) singularities and the Monge–Ampère equation for Ricci-flat Kähler metrics in view of D3-brane solutions of supergravity
In this paper, we analyze the relevance of the generalized Kronheimer construction for the gauge/gravity correspondence. We begin with the general structure of D3-brane solutions of type IIB supergravity on sm...
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Article
The Kähler Quotient Resolution of \({{\mathbb{C}}^3/ \Gamma}\) Singularities, the McKay Correspondence and \({D = 3\,\,\mathcal{N} = 2}\) Chern–Simons Gauge Theories
We advocate that the generalized Kronheimer construction of the Kähler quotient crepant resolution $${\mathcal{M}_\zeta \longrightarro...
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Article
Open AccessOn the topology of the inflaton field in minimal supergravity models
We consider global issues in minimal supergravity models where a single field inflaton potential emerges. In a particular case we reproduce the Starobinsky model and its description dual to a certain formulati...
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Article
Extremal multicenter black holes: nilpotent orbits and Tits Satake universality classes
Four dimensional supergravity theories whose scalar manifold is a symmetric coset manifold UD=4/Hc are arranged into a finite list of Tits Satake universality classes. Stationary solutions of these theories, sphe...
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Article
Integrability of supergravity black holes and new tensor classifiers of regular and nilpotent orbits
In this paper we apply in a systematic way a previously developed integration algorithm of the relevant Lax equation to the construction of spherical symmetric, asymptotically flat black hole solutions of ...
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Article
Supergravity black holes and billiards and the Liouville integrable structure associated with Borel algebras
In this paper we show that the supergravity equations describing both cosmic billiards and a large class of black-holes are, generically, both Liouville integrable as a consequence of the same universal mechan...
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Book
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Chapter
L’Universo, la gravità e la materia
Solo recentemente, a partire dagli anni Venti del XX secolo, l’Umanità ha svelato la natura complessa e dinamica dell’Universo in cui viviamo ed è soltanto all’alba del XXI secolo che dati osservativi precisi ...
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Chapter
L’Universo è un sistema dinamico
Einstein un giorno disse: La cosa più incomprensibile a proposito dell’Universo è che esso sia comprensibile.
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Chapter
Che cos’è Ia gravità?
Ognuno di noi conosce la gravità fin dai primi giorni della propria vita. I bambini che ancora non parlano, ma già stanno seduti sul seggiolone e sputacchiano, ridendo, la pappa che la mamma infila loro in boc...
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Chapter
Superstringhe e Brane danno la risposta?
Delle sue equazioni Einstein soleva dire che il membro di destra è scolpito nel marmo imperituro, mentre quello di sinistra è scritto nel legno deteriorabile.
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Chapter and Conference Paper
The Osp(8|4) singleton action from the super membrane
We derive the free Osp(8|4) singleton action by sending the M2 brane to the Minkowski boundary of an AdS 4×M 7 background. We do this by means of the solvable Lie algebra...
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Chapter and Conference Paper
HyperKähler quotients and N=4 gauge theories in D=2
