Marco Chiodaroli

One-loop four-point amplitudes in pure and matter-coupled N <= 4 supergravity

A bstractWe construct all supergravity theories that can be obtained through factorized orbifold projections of

Scattering amplitudes in N=2 Maxwell-Einstein and Yang-Mills/Einstein supergravity

\mathcal{N}=8

Half-BPS solutions locally asymptotic to AdS 3 × S 3 and interface conformal field theories

supergravity, exposing their double-copy structure, and calculate their one-loop four-point scattering amplitudes. We observe a unified structure in both matter and gravity amplitudes, and demonstrate that the four-graviton amplitudes are insensitive to the precise nature of the matter couplings. We show that these amplitudes are identical for the two different realizations of

Boundary entropy of supersymmetric Janus solutions

\mathcal{N}=4

Exact half-BPS string-junction solutions in six-dimensional supergravity

supergravity with two vector multiplets, and argue that this feature extends to all multiplicities and loop orders as well as to higher dimensions. We also construct a selected set of supergravities obtained through a non-factorized orbifold action. Furthermore we calculate one-loop four-point amplitudes for all pure super-Yang-Mills theories with less-than-maximal supersymmetry using the duality between color and kinematics, finding here a unified expression that holds for all four gluon amplitudes in these theories. We recover the related amplitudes of factorized

Simple holographic duals to boundary CFTs

\mathcal{N}\leq 4

Holographic duals of boundary CFTs

supergravities employing the double-copy construction. We observe a requirement that the four-point loop-level amplitudes have non-local integrand representations, exhibiting a mild non-locality in the form of inverse powers of the three external Mandelstam invariants. These are the first loop-level color-kinematic-satisfying representations in reduced supersymmetry theories.

String junctions and holographic interfaces

A bstractWe expose a double-copy structure in the scattering amplitudes of the generic Jordan family of N=2

Instantons and Wormholes in N=2 supergravity

\mathcal{N}=2