538 citations · 3.8k across the 61 of their papers we have counts for
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Probing multi-particle unitarity with the Landau equations
Miguel Correia, Amit Sever, Alexander Zhiboedov
We consider the scattering amplitude of identical massive particles. We identify the Landau curves in the multi-particle region . We systematicall…
On the light-ray algebra in conformal field theories
Gregory P. Korchemsky, Alexander Zhiboedov
We analyze the commutation relations of light-ray operators in conformal field theories. We first establish the algebra of light-ray operators built out of higher spin currents in…
Generalizing event shapes: In search of lost collider time
Gregory Korchemsky, Emery Sokatchev, Alexander Zhiboedov
We introduce a new class of collider-type observables in conformal field theories which we call generalized event shapes. They are defined as matrix elements of light-ray operators…
Gravitational Effective Field Theory Islands, Low-Spin Dominance, and the Four-Graviton Amplitude
Zvi Bern, Dimitrios Kosmopoulos, Alexander Zhiboedov
We analyze constraints from perturbative unitarity and crossing on the leading contributions of higher-dimension operators to the four-graviton amplitude in four spacetime dimensio…
Scattering from production in 2d
Piotr Tourkine, Alexander Zhiboedov
In 1968, Atkinson proved the existence of functions that satisfy all S-matrix axioms in four spacetime dimensions. His proof is constructive and to our knowledge it is the only res…