Second-order post-Minkowskian scattering in arbitrary dimensions
Journal of High Energy Physics, 2020 We extract the long-range gravitational potential between two scalar particles with arbitrary masses from the two-to-two elastic scattering amplitude at 2nd Post-Minkowskian order in arbitrary dimensions.
Andrea Cristofoli +3 more
doaj +1 more source
The SAGEX review on scattering amplitudes Chapter 7: Positive geometry of scattering amplitudes
Journal of Physics A: Mathematical and Theoretical, 2022 Abstract Scattering amplitudes are both a wonderful playground to discover novel ideas in quantum field theory and simultaneously of immense phenomenological importance to make precision predictions for e.g. particle collider observables and more recently also for gravitational wave signals. In this review chapter, we give an overview of
Enrico Herrmann, Jaroslav Trnka
openaire +2 more sources
Unitarized pion-nucleon scattering amplitude from inverse amplitude method
, 2003 In a recent work on low energy pion-nucleon scattering, instead of using chiral perturbation theory (ChPT) amplitude, we started from a pion-nucleon {\it soft-pion} result and used elastic unitarity directly as a dynamical constraint to construct first ...
Arndt +22 more
core +1 more source
Time-reversed optical focusing through scattering media by digital full phase and amplitude recovery using a single phase-only SLM [PDF]
Journal of Innovative Optical Health Sciences, 2015 Focusing light though scattering media beyond the ballistic regime is a challenging task in biomedical optical imaging. This challenge can be overcome by wavefront shaping technique, in which a time-reversed (TR) wavefront of scattered light is generated
Qiang Yang, Xinzhu Sang, Daxiong Xu
doaj +1 more source
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. In this note, we point out that scattering amplitudes can also have another class of singularities called natural boundaries of analyticity.
openaire +3 more sources
Relativistic theory of magnetic scattering of x rays: Application to ferromagnetic iron [PDF]
, 1997 We present a detailed description of a first-principles formalism for magnetic scattering of circularly polar- ized x rays from solids in the framework of the fully relativistic spin-polarized multiple-scattering theory.
%F. E. Low +31 more
core +1 more source
Photon-photon scattering from a UV-complete gravity QFT
Journal of High Energy Physics, 2022 Quantum quadratic gravity (QQG) produces a tree-level differential cross section for γγ → γγ that is well-behaved at all energies. From this we can study how the corrections to low energy scattering amplitudes are related to the UV physics, in particular
Bob Holdom
doaj +1 more source
Cluster polylogarithms for scattering amplitudes [PDF]
Journal of Physics A: Mathematical and Theoretical, 2014 Motivated by the cluster structure of two-loop scattering amplitudes in N=4 Yang-Mills theory we define "cluster polylogarithm functions". We find that all such functions of weight 4 are made up of a single simple building block associated to the A_2 cluster algebra.
Anastasia Volovich +3 more
openaire +3 more sources
Diffractive and deeply virtual Compton scattering in holographic QCD [PDF]
, 2012 We further analyze the holographic dipole-dipole scattering amplitude developed in arXiv:1202.0831, 1205.3223. Gribov diffusion at strong coupling yields the scattering amplitude in a confining background.
Stoffers, Alexander, Zahed, Ismail
core
On the relation between the Deuteron Form Factor at High Momentum Transfer and the High Energy Neutron-Proton Scattering Amplitude [PDF]
, 2004 A non-relativistic potential-model version of the factorization assumption, used in perturbative QCD calculations of hadronic form factors, is used, along with the Born approximation valid at high energies, to derive a remarkably simple relationship ...
Gerald A. Miller +3 more
core +1 more source