Results 61 to 70 of about 2,132,739 (345)
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 ...
+21 more
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Tensor decomposition for bosonic and fermionic scattering amplitudes [PDF]
Physical Review D, 2020 In this paper, we elaborate on a method to decompose multiloop multileg scattering amplitudes into Lorentz-invariant form factors, which exploits the simplifications that arise from considering four-dimensional external states.
T. Peraro, L. Tancredi
semanticscholar +1 more source
Tropical fans, scattering equations and amplitudes
Journal of High Energy Physics, 2021 We describe a family of tropical fans related to Grassmannian cluster algebras. These fans are related to the kinematic space of massless scattering processes in a number of ways.
James Drummond +3 more
doaj +1 more source
Scatterings of Massive String States from D-brane and Their Linear Relations at High Energies [PDF]
, 2006 We study scatterings of bosonic massive closed string states at arbitrary mass levels from D-brane. We discover that all the scattering amplitudes can be expressed in terms of the generalized hypergeometric function with special arguments, which ...
Bachas +38 more
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Scattering Amplitudes and the Conservative Hamiltonian for Binary Systems at Third Post-Minkowskian Order. [PDF]
Physical Review Letters, 2019 We present the amplitude for classical scattering of gravitationally interacting massive scalars at third post-Minkowskian order. Our approach harnesses powerful tools from the modern amplitudes program such as generalized unitarity and the double-copy ...
Z. Bern +5 more
semanticscholar +1 more source
Entropy bound and unitarity of scattering amplitudes [PDF]
Journal of High Energy Physics, 2020 We establish that unitarity of scattering amplitudes imposes universal entropy bounds. The maximal entropy of a self-sustained quantum field object of radius R is equal to its surface area and at the same time to the inverse running coupling α evaluated ...
G. Dvali
semanticscholar +1 more source
Syzygies probing scattering amplitudes [PDF]
Journal of High Energy Physics, 2016 33 pages, 10 ...
Yehao Zhou +5 more
openaire +4 more sources
Using neural networks for efficient evaluation of high multiplicity scattering amplitudes [PDF]
Journal of High Energy Physics, 2020 Precision theoretical predictions for high multiplicity scattering rely on the evaluation of increasingly complicated scattering amplitudes which come with an extremely high CPU cost. For state-of-the-art processes this can cause technical bottlenecks in
S. Badger, Joseph Aylett-Bullock
semanticscholar +1 more source
Universal opening of four-loop scattering amplitudes to trees [PDF]
Journal of High Energy Physics, 2020 The perturbative approach to quantum field theories has made it possible to obtain incredibly accurate theoretical predictions in high-energy physics.
S. Ramírez-Uribe +4 more
semanticscholar +1 more source
Plahte diagrams for string scattering amplitudes
Journal of High Energy Physics, 2021 Plahte identities are monodromy relations between open string scattering amplitudes at tree level derived from the Koba-Nielsen formula. We represent these identities by polygons in the complex plane.
Pongwit Srisangyingcharoen +1 more
doaj +1 more source