A bstract We study the variance in the measurement of observables during scattering events,
as computed using amplitudes. The classical regime, characterised by negligible …

We present for the first time classical multiparticle solutions in anti–de Sitter space (AdS)
involving scalars, gluons, and gravitons. They are recursively defined through multiparticle …

A bstract In the two-body scattering problem in general relativity, we study the final graviton
particle distribution using a perturbative approach. We compute the mean, the variance and …

A bstract We construct the off-shell recursion for gravity and the graviton current for the
perturbative double field theory (DFT). We first formulate the perturbative DFT, which is …

In this Letter, we present a recursive method for computing one-loop off-shell integrands in
colored quantum field theories. First, we generalize the perturbiner method by recasting the …

A bstract We construct off-shell recursion relations for arbitrary loop-level scattering
amplitudes beyond the conventional tree-level recursion relations for ϕ 4-theory and the …

Applying the quantum field theoretic perturbiner approach to Einstein gravity, we compute
the metric of a Schwarzschild black hole order by order in perturbation theory. Using …

A bstract The quantum off-shell recursion provides an efficient and universal computational
tool for loop-level scattering amplitudes. In this work, we present a new comprehensive …

In this article, we write down the Berends-Giele (BG) currents for extended gravity explicitly
and discuss the unifying relations of these BG currents. This new tool, formally different from …

A bstract Our work focuses on utilizing the Berends-Giele currents to construct differential
operators and unifying relations for 1-loop Feynman integrands. We successfully reproduce …