Results 51 to 60 of about 221,951 (285)

Loop Amplitudes and Quantum Homotopy Algebras

Journal of High Energy Physics, 2020
We derive a recursion relation for loop-level scattering amplitudes of La- grangian field theories that generalises the tree-level Berends-Giele recursion relation in Yang-Mills theory.
Branislav Jurčo, Tommaso Macrelli, Christian Sämann, Martin Wolf   +3 more
doaj   +1 more source

Developmental and Epileptic Encephalopathy due to Biallelic Pathogenic Variants in PIGM

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective PIGM encodes a critical enzyme in the glycosylphosphatidylinositol (GPI)‐anchor biosynthesis pathway. While promoter‐region mutations in PIGM have been associated with a relatively mild phenotype characterized by portal vein thrombosis and absence seizures, recent evidence suggests that coding‐region mutations result in a more severe
Júlia Sala‐Coromina, Anna Marcé‐Grau, Barbara Masotto, Marta Codina, Lamia BenJemaa, Yasmina Elaribi, Mónica Martinez‐Gallo, Roger Colobran, Angel Sanchez‐Montañez, Irene Valenzuela, Yoshiko Murakami, Alfons Macaya   +11 more
wiley   +1 more source

High-energy fixed-angle meson scattering and the constituent counting rule in holographic QCD

Journal of High Energy Physics
We investigate the high-energy fixed-angle scattering of pions and ρ-mesons in a bottom-up holographic QCD model. To this end, we generalise the approach of Polchinski and Strassler [1] to write an ansatz for meson scattering amplitudes based on ...
Adi Armoni, Bartosz Pyszkowski, Shigeki Sugimoto, Dorin Weissman   +3 more
doaj   +1 more source

Alternative Large Nc Schemes and Chiral Dynamics [PDF]

, 2007
We compare the dependences on the number of colors of the leading pion pion scattering amplitudes using the single index quark field and two index quark fields.
F. Giacosa, Francesco Sannino, Joseph Schechter, M. Gell-Mann, P. Minkowski, S. Ishida   +5 more
core   +4 more sources

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Splitting amplitudes at N3LO in QCD

Journal of High Energy Physics
In the limit where partons become collinear to each other, scattering amplitudes factorize into a product of universal, process-independent building blocks and scattering amplitudes involving fewer partons.
Xin Guan, Franz Herzog, Yao Ma, Bernhard Mistlberger, Adi Suresh   +4 more
doaj   +1 more source

Massive scattering amplitudes in six dimensions

Journal of High Energy Physics, 2019
We show that a natural spinor-helicity formalism that can describe massive scattering amplitudes exists in D = 6 dimensions. This is arranged by having helicity spinors carry an index in the Dirac spinor 4 of the massive little group, SO(5) ∼ Sp(4).
Rishabh Jha, Chethan Krishnan, K. V. Pavan Kumar   +2 more
doaj   +1 more source

Writing CFT correlation functions as AdS scattering amplitudes

, 2010
We explore the Mellin representation of conformal correlation functions recently proposed by Mack. Examples in the AdS/CFT context reinforce the analogy between Mellin amplitudes and scattering amplitudes. We conjecture a simple formula relating the bulk
BM Barker, CG Callan Jr, DZ Freedman, E D’Hoker, E D’Hoker, E Witten, H Liu, I Heemskerk, I Heemskerk, IR Klebanov, JM Maldacena, Joao Penedones, K Symanzik, L Cornalba, L Cornalba, L Cornalba, M Gary, P Francesco Di, PAM Dirac, SB Giddings, SB Giddings, SR Huggins, SS Gubser, VK Dobrev   +23 more
core   +1 more source

Faddeev-type equations for three-body symmetry violating scattering amplitudes [PDF]

, 2010
The equations which relate three-body and two-body symmetry violating scattering amplitudes are derived in the first order of symmetry violating interactions.
L. D. Faddeev, Vladimir Gudkov, W. Glöckle, Young-Ho Song   +3 more
core   +3 more sources

Multifunctional Crushing and Piezoresistive Self‐Sensing in Conductive Epoxy/CNT‐Coated Polyetherimide TPMS Lattices

Advanced Engineering Materials, EarlyView.
This study reports lightweight polyetherimide triply periodic minimal surfaces lattices coated with carbon nanotube‐reinforced epoxy that combine mechanical robustness with self‐sensing. The conformal coating enhances stiffness, strength and energy absorption while enabling reliable strain monitoring.
A. Triay, J. Schneider, P. Harrison, S. Kumar   +3 more
wiley   +1 more source