Results 111 to 120 of about 420,119 (232)

On the acoustic scattering amplitude for a multi-layered Scatterer [PDF]

The Journal of the Australian Mathematical Society. Series B. Applied Mathematics, 1998
AbstractWe consider the boundary-value problems corresponding to the scattering of a time-harmonic acoustic plane wave by a multi-layered obstacle with a sound-soft, hard or penetrable core. Firstly, we construct in closed forms the normalized scattering amplitudes and prove the classical reciprocity and scattering theorems for these problems.
openaire   +3 more sources

Null Polygonal Wilson Loops in Full N=4 Superspace

, 2012
We compute the one-loop expectation value of light-like polygonal Wilson loops in N=4 super-Yang-Mills theory in full superspace. When projecting to chiral superspace we recover the known results for tree-level next-to-maximally-helicity-violating (NMHV)
Beisert, Niklas, He, Song, Schwab, Burkhard U. W., Vergu, Cristian   +3 more
core   +1 more source

Construction of the scattering amplitude from the differential cross-sections [PDF]

, 1969
A. Martin
openalex   +1 more source

On the use of the imaginary-mass representations of the Poincaré group in scattering amplitudes [PDF]

, 1966
F. T. Hadjioannou
openalex   +1 more source

Numerical scattering amplitudes with pySecDec

Computer Physics Communications
We present a major update of the program pySecDec, a toolbox for the evaluation of dimensionally regulated parameter integrals. The new version enables the evaluation of multi-loop integrals as well as amplitudes in a highly distributed and flexible way, optionally on GPUs. The program has been optimised and runs up to an order of magnitude faster than
G. Heinrich, S.P. Jones, M. Kerner, V. Magerya, A. Olsson, J. Schlenk   +5 more
openaire   +3 more sources

Wilson Loops and QCD/String Scattering Amplitudes

, 2009
We generalize modern ideas about the duality between Wilson loops and scattering amplitudes in ${\cal N}=4$ SYM to large $N$ QCD by deriving a general relation between QCD meson scattering amplitudes and Wilson loops.
A. M. Polyakov, E. Witten, J. Maldacena, P. Di Vecchia, Poul Olesen, Y. Makeenko, Yuri Makeenko, Z. Nehari   +7 more
core   +1 more source

Learning the simplicity of scattering amplitudes

SciPost Physics
The simplification and reorganization of complex expressions lies at the core of scientific progress, particularly in theoretical high-energy physics. This work explores the application of machine learning to a particular facet of this challenge: the task of simplifying scattering amplitudes expressed in terms of spinor-helicity variables.
Clifford Cheung, Aurélien Dersy, Matthew Schwartz   +2 more
openaire   +3 more sources

Construction of Invariant Scattering Amplitudes for Arbitrary Spins and Analytic Continuation in Total Angular Momentum [PDF]

, 1963
Asım Orhan Barut, I. J. Muzinich, David N. Williams   +2 more
openalex   +1 more source

Interatomic collisions in two-dimensional and quasi-two-dimensional confinements with spin-orbit coupling

, 2012
We investigate the low-energy scattering and bound states of two two-component fermionic atoms in pure two-dimensional (2D) and quasi-2D confinements with Rashba spin-orbit coupling (SOC). We find that the SOC qualitatively changes the behavior of the 2D
J. R. Taylor, Long Zhang, Peng Zhang, Wei Zhang   +3 more
core   +1 more source

Macroscopic Causality Conditions and Properties of Scattering Amplitudes [PDF]

, 1969
Colston Chandler, Henry P. Stapp
openalex   +1 more source