researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions
Showing 2015 · hep-thShow all

13 papers · 2 filters

hep-th2015★ 6 cited

Constraints on Single-Field Inflation

David Pirtskhalava, Luca Santoni, Enrico Trincherini

Many alternatives to canonical slow-roll inflation have been proposed over the years, one of the main motivations being to have a model, capable of generating observable values of…

hep-th2015★ 107 cited

Rényi entropy and conformal defects

Lorenzo Bianchi, Marco Meineri, Robert C. Myers +1

We propose a field theoretic framework for calculating the dependence of Rényi entropies on the shape of the entangling surface in a conformal field theory. Our approach rests on r…

hep-th2015★ 6 cited

Supersymmetry and Inflation

S. Ferrara, A. Sagnotti

Theories with elementary scalar degrees of freedom seem nowadays required for simple descriptions of the Standard Model and of the Early Universe. It is then natural to embed theor…

hep-th2015★ 36 cited

Scale invariant Volkov-Akulov Supergravity

S. Ferrara, M. Porrati, A. Sagnotti

A scale invariant Goldstino theory coupled to Supergravity is obtained as a standard supergravity dual of a rigidly scale invariant higher--curvature Supergravity with a nilpotent…

hep-th2015★ 6 cited

Some Pathways in non-Linear Supersymmetry: Special Geometry Born-Infeld's, Cosmology and dualities

S. Ferrara, A. Sagnotti

This review is devoted to some aspects of non-linear Supersymmetry in four dimensions that can be efficiently described via nilpotent superfields, in both rigid and curved Superspa…

hep-th2015★ 26 cited

Properties of Nilpotent Supergravity

E. Dudas, S. Ferrara, A. Kehagias +1

We construct Supergravity models where the goldstino multiplet has a gravitational origin, being dual to the chiral curvature superfield. Supersymmetry is nonlinearly realized due…

hep-th2015★ 11 cited

Large Non-Gaussianity in Slow-Roll Inflation

David Pirtskhalava, Luca Santoni, Enrico Trincherini +1

Canonical models of single-field, slow-roll inflation do not lead to appreciable non-Gaussianity, unless derivative interactions of the inflaton become uncontrollably large. We pro…

hep-th2015★ 100 cited

Weakly Broken Galileon Symmetry

David Pirtskhalava, Luca Santoni, Enrico Trincherini +1

Effective theories of a scalar invariant under the internal \textit{galileon symmetry} have been extensively studied due to their special theoretical and phenome…

hep-th2015★ 9 cited

Doubly Self-Dual Actions in Various Dimensions

S. Ferrara, A. Sagnotti, A. Yeranyan

The self-duality of the N=1 supersymmetric Born--Infeld action implies a double self-duality of the tensor multiplet square-root action when the scalar and the antisymmetric tensor…

hep-th2015★ 11 cited

A String-Inspired Model for the Low- CMB

N. Kitazawa, A. Sagnotti

We present a semi--analytic exploration of some low-- angular power spectra inspired by "Brane Supersymmetry Breaking". This mechanism splits Bose and Fermi excitations in St…

hep-th2015★ 15 cited

Massive Born--Infeld and Other Dual Pairs

S. Ferrara, A. Sagnotti

We consider massive dual pairs of p-forms and (D-p-1)-forms described by non-linear Lagrangians, where non-linear curvature terms in one theory translate into non-linear mass-like…

hep-th2015★ 165 cited

Boundary and Interface CFTs from the Conformal Bootstrap

F. Gliozzi, P. Liendo, M. Meineri +1

We explore some consequences of the crossing symmetry for defect conformal field theories, focusing on codimension one defects like flat boundaries or interfaces. We study surface…

hep-th2015★ 18 cited

Mixed-symmetry multiplets and higher-spin curvatures

Xavier Bekaert, Nicolas Boulanger, Dario Francia

We study the higher-derivative equations for gauge potentials of arbitrary mixed-symmetry type obtained by setting to zero the divergences of the corresponding curvature tensors. W…