Results 21 to 30 of about 771,621 (289)
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 +3 more
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Measure for Chaotic Scattering Amplitudes
Physical Review Letters, 2022 v2: small corrections, references added; v3: minor improvements to match published ...
Massimo Bianchi +3 more
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Novel approaches to perturbative scattering amplitudes in gauge theory and gravity [PDF]
, 2009 PhDScattering amplitudes of massless quanta play a crucial role in the calculation of cross sections for multi-jet production at hadron colliders. The framework provided by perturbative quantum field theory, based on Feynman diagrams, does not capture ...
Nasti, Adele
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Massive color-kinematics duality and double-copy for Kaluza-Klein scattering amplitudes
Journal of High Energy Physics, 2023 We study the structure of scattering amplitudes of massive Kaluza-Klein (KK) states under toroidal compactification. We present a shifting method to quantitatively derive the scattering amplitudes of massive KK gauge bosons and KK gravitons from the ...
Yao Li, Yan-Feng Hang, Hong-Jian He
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ANALYTIC SCATTERING AMPLITUDES FOR QCD [PDF]
Proceedings of the Conference in Honor of C N Yang's 85th Birthday, 2008 By analytically continuing QCD scattering amplitudes through specific complexified momenta, one can study and learn about the nature and the consequences of factorization and unitarity. In some cases, when coupled with the largest time equation and gauge invariance requirement, this approach leads to recursion relations, which greatly simplify the ...
Vaman, Diana, Yao, York-Peng
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Learning scattering amplitudes by heart
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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Scattering Amplitudes with Open Loops [PDF]
Physical Review Letters, 2012 We introduce a new technique to generate scattering amplitudes at one loop. Traditional tree algorithms, which handle diagrams with fixed momenta, are promoted to generators of loop-momentum polynomials that we call open loops. Combining open loops with tensor-integral and Ossola-Papadopoulos-Pittau reduction results in a fully flexible, very fast, and
Cascioli, F +2 more
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, 2016 Over the past two years, the use of on-shell techniques has deepened our understanding of the S-matrix of gauge theories and led to the calculation of many new scattering amplitudes.
Brandhuber, A +2 more
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Scattering amplitudes and electromagnetic horizons
Journal of High Energy Physics, 2023 We consider the scattering of charged particles on particular electromagnetic fields which have properties analogous to gravitational horizons. Classically, particles become causally excluded from regions of spacetime beyond a null surface which we ...
Anton Ilderton, William Lindved
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Likelihood equations and scattering amplitudes [PDF]
Algebraic Statistics, 2021 We relate scattering amplitudes in particle physics to maximum likelihood estimation for discrete models in algebraic statistics. The scattering potential plays the role of the log-likelihood function, and its critical points are solutions to rational function equations.
Sturmfels, B., Telen, S.
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