235 citations · 1.4k across the 36 of their papers we have counts for
29 papers · 1 filter
Einstein-Cartan pseudoscalaron inflation
Alessandro Di Marco, Emanuele Orazi, Gianfranco Pradisi
We study a class of early universe cosmological models based on Einstein-Cartan gravity and including a higher derivative term corresponding to a power of the Holst scalar curvatur…
Conformal Metric-Affine Gravities
Gonzalo J. Olmo, Emanuele Orazi, Gianfranco Pradisi
We revisit the gauge symmetry related to integrable projective transformations in metric-affine formalism, identifying the gauge field of the Weyl (conformal) symmetry as a dynamic…
(In)equivalence of Metric-Affine and Metric Effective Field Theories
Gianfranco Pradisi, Alberto Salvio
In a geometrical approach to gravity the metric and the (gravitational) connection can be independent and one deals with metric-affine theories. We construct the most general actio…
Heterotic-Type I Dual Pairs, Rigid Branes and Broken Susy
Carlo Angelantonj, Herve Partouche, Gianfranco Pradisi
The moduli space of toroidal type I vacua, which are consistent at the non-perturbative level, consists of independent branches characterized by the number (0, 16 or 32) of rigid b…
Open Strings and Electric Fields in Compact Spaces
Cezar Condeescu, Emilian Dudas, Gianfranco Pradisi
We analyse open strings with background electric fields in the internal space, T-dual to branes moving with constant velocities in the internal space. We find that the direction of…
Non-Supersymmetric Magic Theories and Ehlers Truncations
Alessio Marrani, Gianfranco Pradisi, Fabio Riccioni +1
We consider the non-supersymmetric "magic" theories based on the split quaternion and the split complex division algebras. We show that these theories arise as "Ehlers" $SL(2,\math…