Results 51 to 60 of about 217,791 (313)

Scattering Amplitudes at LHC

open access: yesNuclear and Particle Physics Proceedings, 2015
AbstractI analyze the algebraic patterns underlying the structure of scattering amplitudes in quantum field theory. I focus on the decomposition of amplitudes in terms of independent functions and the systems of differential equations the latter obey.
openaire   +4 more sources

Scattering Amplitudes

open access: yes, 2013
The purpose of this review is to bridge the gap between a standard course in quantum field theory and recent fascinating developments in the studies of on-shell scattering amplitudes. We build up the subject from basic quantum field theory, starting with Feynman rules for simple processes in Yukawa theory and QED.
Elvang, Henriette, Huang, Yu-tin
openaire   +2 more sources

The sub-leading scattering waveform from amplitudes

open access: yesJournal of High Energy Physics, 2023
We compute the next-to-leading order term in the scattering waveform of uncharged black holes in classical general relativity and of half-BPS black holes in N $$ \mathcal{N} $$ = 8 supergravity.
Aidan Herderschee, Radu Roiban, Fei Teng
doaj   +1 more source

Notes on High Energy Limit of Bosonic Closed String Scattering Amplitudes

open access: yes, 2006
We study bosonic closed string scattering amplitudes in the high-energy limit. We find that the methods of decoupling of high-energy zero-norm states and the high-energy Virasoro constraints, which were adopted in the previous works to calculate the ...
Chan   +32 more
core   +1 more source

D-Brane Scattering of N=2 Strings [PDF]

open access: yes, 2001
The amplitudes for emission and scattering of N=2 strings off D-branes are calculated. We consider in detail the amplitudes and for the different types of D-branes.
Ademollo   +19 more
core   +3 more sources

Cluster polylogarithms for scattering amplitudes [PDF]

open access: yesJournal 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

Direct Proof Of Tree-Level Recursion Relation In Yang-Mills Theory

open access: yes, 2005
Recently, by using the known structure of one-loop scattering amplitudes for gluons in Yang-Mills theory, a recursion relation for tree-level scattering amplitudes has been deduced.
Bo Feng   +4 more
core   +2 more sources

Neurotoxic amyloid β‐peptide and tau produce cytokine‐like effects on PMCA in glioblastoma cell lines, enhancing its activity and isoforms expression

open access: yesFEBS Open Bio, EarlyView.
Two biomarkers of Alzheimer's disease, amyloid β‐peptide (Aβ) and tau, induce the transformation of U‐251 and other glioblastoma cell lines into neurotoxic A1‐like reactive astrocytes. This transformation is produced by cytokines and is followed by upregulation of PMCA activity and isoform expression, and is closely associated with inflammation, as ...
María Berrocal   +2 more
wiley   +1 more source

Automated computation of scattering amplitudes

open access: yes, 2013
We review some of the recent advances in the computation of one-loop scattering amplitudes which led to the construction of efficient and automated computational tools for NLO predictions.
Ossola, Giovanni
core   +1 more source

Biophysical characterization and ion transport with cell‐based and proteoliposome reconstitution assays of invertebrate K+‐Cl− cotransporters

open access: yesFEBS Open Bio, EarlyView.
The K+‐Cl− cotransporters (KCCs) facilitate the symport of ions across the plasma membrane. They participate in physiological processes including neuronal regulation. Here, we characterized KCCs from Drosophila and Hydra vulgaris. Comparative analyses of transporters provide insights into the mechanism of KCC ion transport, regulation, and evolution ...
Satoshi Fudo   +4 more
wiley   +1 more source

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