Results 71 to 80 of about 56,080 (199)

On fine structure of strings: the universal correction to the Veneziano amplitude

Journal of High Energy Physics, 2018
We consider theories of weakly interacting higher spin particles in flat space-time. We focus on the four-point scattering amplitude at high energies and imaginary scattering angles. The leading asymptotic of the amplitude in this regime is universal and
Amit Sever, Alexander Zhiboedov
doaj   +1 more source

Scattering of stringy states in compactified closed bosonic string

Nuclear Physics B, 2015
We present scattering of stringy states of closed bosonic string compactified on torus Td. We focus our attention on scattering of moduli and gauge bosons.
Jnanadeva Maharana
doaj   +1 more source

Graviton reggeization and high energy gravitational scattering of scalar particles

European Physical Journal C: Particles and Fields
In this paper we consider a high energy scattering of free scalar particles through a gravitational field. The one particle t-channel amplitude of the scattering in this limit is governed by reggeized graviton.
S. Bondarenko
doaj   +1 more source

Scattering Amplitude of Surface Plasmon Polariton Excited by a Finite Grating. [PDF]

Nanomaterials (Basel), 2023
Dyshlyuk AV, Proskurin A, Bogdanov AA, Vitrik OB.   +3 more
europepmc   +1 more source

Four-gauge-particle scattering amplitudes and Polyakov string path integral in the proper-time gauge

Physics Letters B, 2019
We evaluate four-gauge-particle tree level scattering amplitudes using the Polyakov string path integral in the proper-time gauge, where the string path integral can be cast into the Feynman-Schwinger proper-time representation.
Taejin Lee
doaj  

Four-graviton scattering to three loops in N = 8 $$ \mathcal{N}=8 $$ supergravity

Journal of High Energy Physics, 2019
We compute the three-loop scattering amplitude of four gravitons in N = 8 $$ \mathcal{N}=8 $$ supergravity. Our results are analytic formulae for a Laurent expansion of the amplitude in the regulator of dimensional regularisation.
J. M. Henn, B. Mistlberger
doaj   +1 more source

Analytical Calculations of Scattering Amplitude of Surface Plasmon Polaritons Excited by a Spherical Nanoantenna. [PDF]

Nanomaterials (Basel), 2021
Dyshlyuk AV, Proskurin A, Bogdanov AA, Vitrik OB.   +3 more
europepmc   +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

Atomic scattering amplitudes for electron diffraction [PDF]

, 1954
James A. Ibers, J. A. Hoerni
openalex   +1 more source

Cwebs in multiparton scattering amplitude: Structures at four loops [PDF]

EPJ Web of Conferences
Soft function exponentiates in terms of the soft anomalous dimension ΓS; the Feynman diagrams contributing to it are called Cwebs. The colour and kinematics of a Cweb mix via a web mixing matrix – calculation of web mixing matrices at higher loop orders ...
Agarwal Neelima, Pal Sourav, Srivastav Aditya, Tripathi Anurag   +3 more
doaj   +1 more source