Results 71 to 80 of about 217,791 (313)

On triple-cut of scattering amplitudes

Physics Letters B, 2007
It is analysed the triple-cut of one-loop amplitudes in dimensional regularisation within spinor-helicity representation. The triple-cut is defined as a difference of two double-cuts with the same particle content, and a same propagator carrying, respectively, causal and anti-causal prescription in each of the two cuts. That turns out into an effective
openaire   +4 more sources

Infinities within graviton scattering amplitudes

, 1995
We present unitarity as a method for determining the infinities present in graviton scattering amplitudes. The infinities are a combination of IR and UV. By understanding the soft singularities we may extract the UV infinities and relate these to counter-
't Hooft G, 't Hooft G, 't Hooft G, Aeppli A, Berends F A, Constanti V, Cutkosky R E, David C Dunbar, DeTollis B, DeWitt B S, Dixon L, Fradkin E S, Fradkin E S, Gastmans R, Goroff M H, Grisaru M T, Gunion J F, Jack I, Melrose D B, Norridge P S, Novaes S F, Paul S Norridge, Siegel W, van Neerven W, van Oldenborgh G J, van Oldenborgh G J, Veltman M, Weinberg S   +27 more
core   +1 more source

Non‐Destructive and Mechanical Characterization of the Bond Quality of Co‐Extruded Titanium‐Aluminum Profiles

Advanced Engineering Materials, EarlyView.
This study investigates the bond quality of co‐extruded aluminum–titanium hybrid profiles, focusing on the lateral angular co‐extrusion (LACE) process. It examines how heat treatments (HT) affect intermetallic phase formation, bond strength, and material properties.
Norman Mohnfeld, Ahmed Dewidar, Karim Qarbi, Hendrik Wester, Florian Patrick Schäfke, Alexej Verschinin, Hans Jürgen Maier, Sebastian Barton, Christian Klose, Johanna Uhe   +9 more
wiley   +1 more source

Chaotic scattering of highly excited strings

Journal of High Energy Physics, 2021
Motivated by the desire to understand chaos in the S-matrix of string theory, we study tree level scattering amplitudes involving highly excited strings. While the amplitudes for scattering of light strings have been a hallmark of string theory since its
David J. Gross, Vladimir Rosenhaus
doaj   +1 more source

Advances in Hybrid Icing and Frosting Protection Strategies for Optics, Lens, and Photonics in Cold Environments Using Thin‐Film Acoustic Waves

Advanced Engineering Materials, EarlyView.
This article provides a comprehensive overview of fundamentals and recent advances of transparent thin‐film surface acoustic wave technologies on glass substrates for monitoring and prevention/elimination of fog, ice, and frost. Fogging, icing, or frosting on optical lenses, optics/photonics, windshields, vehicle/airplane windows, and solar panel ...
Hui Ling Ong, Zhangbin Ji, Luke Haworth, Yihao Guo, Jaime del Moral, Stefan Jacob, Ana Borras, Agustin R. Gonzalez‐Elipe, Jikai Zhang, Jian Zhou, Glen McHale, Yong‐Qing Fu   +11 more
wiley   +1 more source

Worldline geometries for scattering amplitudes

Journal of High Energy Physics
In this paper, we construct the path integral for infinite and semi-infinite scalar worldlines. We show that, at the asymptotic endpoints, on-shell physical states can be generated by inserting vertex operators at infinity.
Roberto Bonezzi, Maria Foteini Kallimani
doaj   +1 more source

Consolidate Overview of Ribonucleic Acid Molecular Dynamics: From Molecular Movements to Material Innovations

Advanced Engineering Materials, EarlyView.
Molecular dynamics simulations are advancing the study of ribonucleic acid (RNA) and RNA‐conjugated molecules. These developments include improvements in force fields, long‐timescale dynamics, and coarse‐grained models, addressing limitations and refining methods.
Kanchan Yadav, Iksoo Jang, Jong Bum Lee
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

Analytical amplitudes from numerical solutions of the scattering equations

Journal of High Energy Physics, 2020
The CHY formalism for massless scattering provides a cohesive framework for the computation of scattering amplitudes in a variety of theories. It is especially compelling because it elucidates existing relations among theories which are seemingly ...
Giuseppe De Laurentis
doaj   +1 more source

Maximal transcendental weight contribution of scattering amplitudes

Journal of High Energy Physics, 2022
Feynman integrals in quantum field theory evaluate to special functions and numbers that are usefully described by the notion of transcendental weight. In this paper, we propose a way of projecting a given dimensionally-regularised Feynman integral, for ...
Johannes M. Henn, William J. Torres Bobadilla   +1 more
doaj   +1 more source