Results 131 to 140 of about 700,670 (248)
Nonlocal QED and lepton g-2 anomalies
European Physical Journal C: Particles and FieldsQuantum electrodynamics is generally extended to a nonlocal QED by introducing the correlation functions. The gauge link is introduced to guarantee that the nonlocal QED is locally U(1) gauge invariant.
Hang Li, P. Wang
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Photo‐Excitations in Halide Perovskites: Where Do Simulations and Experiments Meet?
Laser &Photonics Reviews, Volume 20, Issue 6, 18 March 2026.Aiming to bridge the gap between simulations and measurements of light–matter couplings and photo‐excitations in new functional materials, this perspective highlights insights and bottlenecks of state‐of‐the‐art experimental and theoretical methods (2D electronic spectroscopy vs.
Muhammad Sufyan Ramzan +5 more
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Open spin chains and complexity in the high energy limit
European Physical Journal C: Particles and Fields, 2018 In the high energy limit of scattering amplitudes in Quantum Chromodynamics and supersymmetric theories the dominant Feynman diagrams are characterized by a hidden integrability in the planar limit. A well-known example is that of Odderon exchange, which
Grigorios Chachamis, Agustín Sabio Vera
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Fortschritte der Physik, Volume 74, Issue 3, March 2026.ABSTRACT We propose a manifestly duality‐invariant, Lorentz‐invariant, and local action to describe quantum electrodynamics in the presence of magnetic monopoles that derives from Sen's formalism. By employing field strengths as the dynamical variables, rather than potentials, this formalism resolves longstanding ambiguities in prior frameworks.
Aviral Aggarwal +2 more
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Counting the number of master integrals for sunrise diagrams via the Mellin-Barnes representation
Journal of High Energy Physics, 2017 A number of irreducible master integrals for L-loop sunrise and bubble Feynman diagrams with generic values of masses and external momenta are explicitly evaluated via the Mellin-Barnes representation.
Mikhail Yu. Kalmykov, Bernd A. Kniehl
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physica status solidi (b), Volume 263, Issue 3, March 2026.Vacancies in low‐dose ion‐implanted GaN are studied by positron annihilation. Depth profiles of the net donor concentration (ND) are close to those for implanted impurities, but ND is 2–3 times higher than concentrations of implanted ions. The origin of donor‐like defects is expected to be N‐vacancy‐related defects, and Ga‐vacancy‐type defects play a ...
Akira Uedono +6 more
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The Next Frontier: Micro/Nanorobots Operating Inside the Living Body
SmartBot, Volume 2, Issue 1, March 2026.Micro/nanorobots, with their tiny size and controllable motion capabilities, can perform complex and precise tasks in micro‐spaces, thus showing broad application prospects in the biomedical field. This review systematically summarizes the core advantages of micro/nanorobots in real‐time in vivo imaging, targeted drug delivery, and active barrier ...
Ningbo Yu +5 more
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A general theory of far-field optical microscopy image formation and resolution limit using double-sided Feynman diagrams. [PDF]
Sci Rep, 2020 Fukutake N.
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Weight Systems from Feynman Diagrams
Journal of Knot Theory and Its Ramifications, 1998 We find that the overall UV divergences of a renormalizable field theory with trivalent vertices fulfil a four-term relation. They thus come close to establish a weight system. This provides a first explanation of the recent successful association of renormalization theory with knot theory.
openaire +3 more sources
Methodological Frameworks for Computational Electrocatalysis: From Theory to Practice
Small Methods, Volume 10, Issue 5, 9 March 2026.Computational modeling is widely used to investigate electrocatalytic reactions, yet accurately describing electrochemical interfaces remains challenging. This review outlines theoretical and computational strategies, based on density functional theory, to model reaction thermodynamics, solvation effects, applied bias, and kinetics.
Michele Re Fiorentin +8 more
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