We survey on-shell and off-shell higher derivative supergravities in dimensions 1≤ D≤ 11.
Various approaches to their construction, including the Noether procedure,(harmonic) …

A bstract We explore the space of meromorphic amplitudes with extra constraints coming
from the shape of the leading Regge trajectory. This information comes in two guises: it …

A bstract A number of diagrammatic “cutting rules” have recently been developed for the
wavefunction of the Universe which determines cosmological correlation functions. These …

A bstract We continue the program [1] of carving out the space of large N confining gauge
theories by modern S-matrix bootstrap methods, with the ultimate goal of cornering large N …

Physical principles such as unitarity, causality, and locality can constrain the space of
consistent effective field theories (EFTs) by imposing two-sided bounds on the allowed …

A bstract We consider four-point correlators in an excited quantum state of a field theory. We
show that, when the theory and state are holographic, a judiciously applied Fourier …

A bstract We study two-to-two scattering amplitudes of a scalar particle of mass m. For
simplicity, we assume the presence of ℤ 2 symmetry and that the particle is ℤ 2 odd. We …

We derive new positivity bounds at finite momentum transfer, assuming a large separation
between the mass m of the lightest particle in the effective theory and the mass gap M to new …

A bstract We study the eikonal scattering of two gravitationally interacting bodies, in the
regime of large angular momentum and large center of mass energy. We show that eikonal …

We consider positivity constraints applicable to the effective field theory (EFT) of gravity in
arbitrary dimensions. By considering scattering of indefinite initial and final states, we …