Results 31 to 40 of about 1,633 (195)
Structure of light-front vacuum sector diagrams
Physics Letters B, 2019 We study the structure of scalar field light-front quantization vacuum graphs. In instant-time quantization both non-vacuum and vacuum graphs can equivalently be described by either the off-shell four-dimensional Feynman diagram approach or the on-shell ...
Philip D. Mannheim +2 more
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Exact Solutions v.s. Perturbative Calculations of Finite Φ3-Φ4 Hybrid-Matrix-Model
Nuclear Physics B, 2023 There is a matrix model corresponding to a scalar field theory on noncommutative spaces called Grosse-Wulkenhaar model (Φ4 matrix model), which is renormalizable by adding a harmonic oscillator potential to scalar Φ4 theory on Moyal spaces.
Naoyuki Kanomata, Akifumi Sako
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Angewandte Chemie, EarlyView.This study explores the origins of life by linking prebiotic chemistry, the emergence of information‐carrying molecules such as RNA and proteins, and philosophical questions about consciousness. The study emphasizes the role of molecular evolution in the Central Dogma and provides insights into the chemical origins of biology and the basis of life's ...
Harald Schwalbe +5 more
wiley +2 more sources
Description of processes passing at finite space and time intervals in the framework of QFT [PDF]
EPJ Web of Conferences, 2019 We consider a new approach to the description in the framework of QFT of processes passing at finite space and time intervals. The formalism is based on the Feynman diagram technique in the coordinate representation, in which the rules of passing to the ...
Egorov Vadim, Volobuev Igor
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Fast evaluation of Feynman diagrams [PDF]
Physical Review D, 2000 uses feynmp macros; v2 contains improved description of renormalization, plus other minor ...
Easther, Richard +2 more
openaire +2 more sources
W pair production at lepton colliders in the Feynman-diagram gauge [PDF]
EPJ Web of ConferencesIn ref. [1], we calculated helicity amplitudes for e−e+ → W−W+ in the Feynman-diagram (FD) gauge analytically, and showed that the cross section can be understood by the individual γ, Z and ν amplitudes in the FD gauge.
Furusato Hiroyuki +3 more
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Atomistic Mechanisms Triggered by Joule Heating Effects in Metallic Cu‐Bi Nanowires for Spintronics
Advanced Materials, EarlyView.Bi doped metallic Cu nanowires are promising for spintronics thanks to the stabilization of a giant spin Hall effect. However, heat resulting from current injection forces Bi to leave solution, forcing segregation into monoatomic decorations which evolve into coherent crystalline aggregates.
Alejandra Guedeja‐Marrón +6 more
wiley +1 more source
Journal of High Energy Physics, 2021 We provide a leading singularity analysis protocol in Baikov representation, for the searching of Feynman integrals with uniform transcendental (UT) weight.
Christoph Dlapa, Xiaodi Li, Yang Zhang
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Electronic Structure Reorganization in MPS3 via d‐Shell‐Selective Alkali Metal Doping
Advanced Science, EarlyView.Alkali metal doping of layered MPS3 antiferromagnets reveals d‐shell‐selective responses. While MnPS3 resists charge transfer due to its half‐filled 3d5 shell, FePS3 and NiPS3 behave similarly to CoPS3 by accommodating extra d‐electrons. Yet only CoPS3, with its least stable d‐shell, undergoes pronounced band restructuring and a semiconducting‐to ...
Jonah Elias Nitschke +12 more
wiley +1 more source
Photon radiation in $$e^+e^-\;\rightarrow \;$$ e + e - → hadrons at low energies with carlomat_3.1
European Physical Journal C: Particles and Fields, 2017 We present a sample of results for the cross sections of several processes of low energetic $$e^+e^-$$ e + e - annihilation into final states containing pions accompanied by one or two photons, or a light lepton pair.
Fred Jegerlehner, Karol Kołodziej
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