Results 1 to 10 of about 221,802 (148)

Δ-algebra and scattering amplitudes

Journal of High Energy Physics, 2019
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.
Freddy Cachazo, Nick Early, Alfredo Guevara, Sebastian Mizera   +3 more
doaj   +3 more sources

String scattering amplitudes and deformed cubic string field theory

Physics Letters B, 2018
We study string scattering amplitudes by using the deformed cubic string field theory which is equivalent to the string field theory in the proper-time gauge.
Sheng-Hong Lai, Jen-Chi Lee, Taejin Lee, Yi Yang   +3 more
doaj   +4 more sources

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
doaj   +2 more sources

Amplitudes, observables, and classical scattering

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, Ben Maybee, Donal O’Connell   +2 more
doaj   +3 more sources

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
doaj   +1 more source

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
doaj   +1 more source

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
doaj   +1 more source

Full one-loop amplitudes from tree amplitudes [PDF]

, 2008
We establish an efficient polynomial-complexity algorithm for one-loop calculations, based on generalized $D$-dimensional unitarity. It allows automated computations of both cut-constructible {\it and} rational parts of one-loop scattering amplitudes ...
, A. Cafarella, A. Pukhov ., C. Anastasiou, F. Krauss, G. 't Hooft, G. Ossola, G. Ossola, G. Passarino, J.R. Andersen, Kirill Melnikov, M.L. Mangano, R. Britto, R.K. Ellis, R.K. Ellis, R.K. Ellis, R.K. Ellis, T. Binoth, W.B. Kilgore, Walter T Giele, Z. Bern, Zoltan Kunszt   +21 more
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The Interacting $W_3$ String [PDF]

, 1993
We present a procedure for computing gauge-invariant scattering amplitudes in the $W_3$ string, and use it to calculate three-point and four-point functions.
Belavin, Bilal, C.N. Pope, Das, Das, Green, H. Lu, Lian, Lu, Lu, Pope, Pope, Pope, Pope, Rama, Romans, S. Schrans, Thielemans, Thierry-Mieg, Witten, Witten, X.J. Wang   +21 more
core   +3 more sources

Tree-Level Formalism [PDF]

, 2011
We review two novel techniques used to calculate tree-level scattering amplitudes efficiently: MHV diagrams, and on-shell recursion relations. For the MHV diagrams, we consider applications to tree-level amplitudes and focus in particular on the N=4 ...
Adamo T Mason L, Andreas Brandhuber, Arkani-Hamed N, Arkani-Hamed N Bourjaily J L Cachazo F Caron-Huot S Trnka J, Arkani-Hamed N Cachazo F Kaplan J, Badger S D, Badger S D, Badger S D, Benincasa P, Benincasa P Conde E, Bern Z, Bern Z Carrasco J J M Johansson H, Bill Spence, Boels R, Boels R, Boels R, Boels R H, Brandhuber A, Brandhuber A, Brandhuber A, Britto R, Bullimore M Mason L Skinner D, Cachazo F, Cachazo F, Cachazo F, Cachazo F Svrcek P, Dixon L J, Dixon L J, Drummond J M, Eden R J, Elvang H, Elvang H, Elvang H, Ettle J H, Ettle J H, Feng B He S Huang R Jia Y, Feng H, Fu C H, Gabriele Travaglini, Gang D Huang Y T Koh E Lee S Lipstein A E, Georgiou G, Georgiou G, Gorsky A, Gukov S, Hodges A, Hodges A P, Hodges A P, Hodges A P, Mansfield P, Mason L J, Mason L Skinner D, Ozeren K J, Quigley C, Risager K, Roiban R, Thorn C B   +55 more
core   +1 more source