Results 11 to 20 of about 2,316,597 (371)

Measure for Chaotic Scattering Amplitudes. [PDF]

Physical Review Letters, 2022
We propose a novel measure of chaotic scattering amplitudes. It takes the form of a log-normal distribution function for the ratios r_{n}=δ_{n}/δ_{n+1} of (consecutive) spacings δ_{n} between two (consecutive) peaks of the scattering amplitude.
M. Bianchi, Maurizio Firrotta, J. Sonnenschein, Dorin Weissman   +3 more
semanticscholar   +6 more sources

Positive moments for scattering amplitudes [PDF]

Physical Review D, 2020
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
B. Bellazzini, Joan Elias Mir'o, R. Rattazzi, M. Riembau, F. Riva   +4 more
semanticscholar   +6 more sources

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, Brandhuber, A, Dorey, P, McLoughlin, T, Abreu, S, Bern, Z, Bjerrum-Bohr, NEJ, Blümlein, J, Britto, R, Carrasco, JJM, Chicherin, D, Chiodaroli, M, Damgaard, PH, Del Duca, V, Dixon, LJ, Dorigoni, D, Duhr, C, Geyer, Y, Green, MB, Herrmann, E, Heslop, P, Johansson, H, Korchemsky, GP, Kosower, DA, Mason, L, Monteiro, R, O’Connell, D, Papathanasiou, G, Planté, L, Plefka, J, Puhm, A, Raclariu, A-M, Roiban, R, Schneider, C, Trnka, J, Vanhove, P, Wen, C, White, CD   +37 more
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Scattering of Plane Electromagnetic Waves by Lattices of Spherical Dielectric Resonators with Degenerate Lower Types of Natural Oscillations

Vìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ, 2023
The problem of scattering of plane electromagnetic waves on lattices of spherical dielectric resonators (DRs) with low magnetic oscillations is considered.
О. О. Трубін
doaj   +1 more source

Supergravity scattering amplitudes

Physical Review D, 2023
Supergravity theories with non-minimal Kähler potentials are characterized by a non-trivial field space manifold with corresponding non-trivial kinetic terms. The scattering amplitudes in these theories can be calculated at fixed background field values by making a field redefinition to Riemann normal coordinates.
Emilian Dudas, Tony Gherghetta, Keith A. Olive, Sarunas Verner   +3 more
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Geometry in scattering amplitudes

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, Elizabeth E. Jenkins, Aneesh V. Manohar   +2 more
openaire   +4 more sources

Eikonal amplitudes from curved backgrounds

SciPost Physics, 2022
Eikonal exponentiation in QFT describes the emergence of classical physics at long distances in terms of a non-trivial resummation of infinitely many diagrams.
Tim Adamo, Andrea Cristofoli, Piotr Tourkine
doaj   +1 more source

The SAGEX review on scattering amplitudes Chapter 13: Post-Minkowskian expansion from scattering amplitudes [PDF]

Journal of Physics A: Mathematical and Theoretical, 2022
The post-Minkowskian expansion of Einstein’s general theory of relativity has received much attention in recent years due to the possibility of harnessing the computational power of modern amplitude calculations in such a classical context. In this brief
N. Bjerrum-Bohr, P. Damgaard, L. Planté, P. Vanhove   +3 more
semanticscholar   +1 more source

Scattering Amplitudes and Conservative Binary Dynamics at O(G^{4}). [PDF]

Physical Review Letters, 2021
Using scattering amplitudes, we obtain the potential contributions to conservative binary dynamics in general relativity at fourth post-Minkowskian order O(G^{4}).
Z. Bern, Julio Parra-Martinez, R. Roiban, M. Ruf, Chia-Hsien Shen, M. Solon, M. Zeng   +6 more
semanticscholar   +1 more source

Conservative Binary Dynamics with a Spinning Black Hole at O(G^{3}) from Scattering Amplitudes. [PDF]

Physical Review Letters, 2022
We compute the conservative two-body Hamiltonian of a compact binary system with a spinning black hole through O(G^{3}) to all orders in velocity, including linear and quadratic spin terms.
F. Cordero, M. Kraus, Guanda Lin, M. Ruf, M. Zeng   +4 more
semanticscholar   +1 more source