Results 11 to 20 of about 2,118,889 (347)
$\Delta$-Algebra and Scattering Amplitudes [PDF]
Journal of High Energy Physics, 2018 In this paper we study an algebra that naturally combines two familiar operations in scattering amplitudes: computations of volumes of polytopes using triangulations and constructions of canonical forms from products of smaller ones.
Cachazo, Freddy +3 more
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The SAGEX review on scattering amplitudes* [PDF]
Journal of Physics A: Mathematical and Theoretical, 2022 Abstract This is an introduction to, and invitation to read, a series of review articles on scattering amplitudes in gauge theory, gravity, and superstring theory. Our aim is to provide an overview of the field, from basic aspects to a selection of current (2022) research and developments.
Travaglini, G +37 more
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Geometry in scattering amplitudes [PDF]
Physical Review D, 2022 We formulate the field-space geometry for an effective field theory of scalars and gauge bosons. Geometric invariants such as the field-space curvature enter in both scattering amplitudes and the renormalization group equations, with the scalar and gauge results unified in a single expression.
Andreas Helset +2 more
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Learning scattering amplitudes by heart [PDF]
Physics Letters B, 2021 The canonical forms associated to scattering amplitudes of planar Feynman diagrams are interpreted in terms of masses of projectives, defined as the modulus of their central charges, in the hearts of certain t-structures of derived categories of quiver ...
Severin Barmeier, Koushik Ray
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Positive moments for scattering amplitudes [PDF]
Physical Review D, 2021 We find the complete set of conditions satisfied by the forward $2\to2$ scattering amplitude in unitarity and causal theories. These are based on an infinite set of energy dependent quantities -- the arcs -- which are dispersively expressed as moments of a positive measure defined at (arbitrarily) higher energies.
Joan Elias Miró +6 more
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Unifying relations for scattering amplitudes [PDF]
Journal of High Energy Physics, 2018 We derive new amplitudes relations revealing a hidden unity among a wideranging variety of theories in arbitrary spacetime dimensions. Our results rely on a set of Lorentz invariant differential operators which transmute physical tree-level scattering ...
Clifford Cheung +2 more
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Scattering Amplitudes: Celestial and Carrollian [PDF]
Physical Review Letters, 2022 21 ...
Arjun Bagchi +3 more
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Amplitudes, observables, and classical scattering [PDF]
Journal of High Energy Physics, 2019 We present a formalism for computing classically measurable quantities directly from on-shell quantum scattering amplitudes. We discuss the ingredients needed for obtaining the classical result, and show how to set up the calculation to derive the result
David A. Kosower +2 more
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Natural boundaries for scattering amplitudes
SciPost Physics, 2023 Singularities, such as poles and branch points, play a crucial role in investigating the analytic properties of scattering amplitudes that inform new computational techniques.
Sebastian Mizera
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Measure for Chaotic Scattering Amplitudes [PDF]
Physical Review Letters, 2022 v2: small corrections, references added; v3: minor improvements to match published ...
Massimo Bianchi +3 more
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