Results 51 to 60 of about 1,785 (186)

Mid‐Infrared Free‐Space Optical Communications: Technologies, Demonstrations and Future Directions

open access: yesIET Optoelectronics, Volume 20, Issue 1, January/December 2026.
Free‐space optical (FSO) communication is increasingly extending beyond the near‐infrared to the mid‐wave infrared (MWIR) and long‐wave infrared (LWIR) regions, which offer reduced turbulence, scattering and absorption for more robust links. This review summarises recent advances in MWIR/LWIR FSO technologies, including quantum cascade lasers, lithium ...
Darja Cirjulina   +16 more
wiley   +1 more source

RECENT PROGRESS IN LATTICE QCD [PDF]

open access: yesInternational Journal of Modern Physics A, 2009
In recent years, realistic unquenched QCD simulations have been carried out with various lattice actions. In this report, I explain the progress in theory and algorithms and some of the physics results.
openaire   +2 more sources

An Overview of Scale Invariance in Proton Structure With Holographic Insights

open access: yesAdvances in High Energy Physics, Volume 2026, Issue 1, 2026.
The concept of self‐similarity in the internal structure of the proton, rooted in scale invariance and fractal geometry, provides an intriguing framework for understanding the behavior of parton distribution functions (PDFs), particularly in the small x region probed in deep inelastic scattering (DIS).
Akbari Jahan, Fu-Hu Liu
wiley   +1 more source

PHENOMENOLOGY FROM LATTICE QCD [PDF]

open access: yesLepton-Photon 01, 2002
I review two subject in which lattice simulations are making, or can make in the future, a significant contribution to particle physics phenomenology. The first subject is the evaluation of quantities which enter into the determination of the vertex A of the unitarity triangle from experimental measurements of decay rates and mixing amplitudes.
openaire   +4 more sources

Results and techniques for higher order calculations within the gradient-flow formalism

open access: yesJournal of High Energy Physics, 2019
We describe in detail the implementation of a systematic perturbative approach to observables in the QCD gradient-flow formalism. This includes a collection of all relevant Feynman rules of the five-dimensional field theory and the composite operators ...
Johannes Artz   +4 more
doaj   +1 more source

Extraction of Effective Parameters From Transverse Momentum Spectra of Heavy Quarkonia in Proton–Proton Collisions at the LHC

open access: yesAdvances in High Energy Physics, Volume 2026, Issue 1, 2026.
The effective string tension (κ) in the Schwinger mechanism and the effective temperature (T) in Bose–Einstein statistics are extracted from the transverse momentum (pT) spectra of heavy quarkonia produced in proton‐proton (p + p) collisions at the Large Hadron Collider (LHC).
Peng-Cheng Zhang   +4 more
wiley   +1 more source

Lattice Qcd

open access: yes, 2002
A general introduction to lattice QCD suitable for graduate students in experimental and theoretical particle physics. Aimed at those who want to know how lattice calculations are done, and what the pitfalls are, without having to do the calculations themselves.
openaire   +2 more sources

Lignin as a Renewable Precursor for Carbon Quantum Dots: Synthesis, Doping Strategies, and Applications

open access: yesAdvanced Energy and Sustainability Research, Volume 6, Issue 12, December 2025.
Lignin‐derived carbon quantum dots are produced via hydrothermal doping with ethylenediamine, enhancing fluorescence, quantum yield, and tunable photoluminescence for diverse applications. These biocompatible nanomaterials enable safe use in bioimaging, sensing, and monitoring, offering optical stability under various conditions. Valorizing lignin from
Rosinaldo Rabelo Aparício   +6 more
wiley   +1 more source

On the power divergence in quasi gluon distribution function

open access: yesJournal of High Energy Physics, 2018
Recent perturbative calculation of quasi gluon distribution function at one-loop level shows the existence of extra linear ultraviolet divergences in the cut-off scheme.
Wei Wang, Shuai Zhao
doaj   +1 more source

Bilinear quark operators in the RI/SMOM scheme at three loops

open access: yesPhysics Letters B, 2020
We consider the renormalization of the matrix elements of the bilinear quark operators ψ¯ψ, ψ¯γμψ, and ψ¯σμνψ at next-to-next-to-next-to-leading order in QCD perturbation theory at the symmetric subtraction point.
Bernd A. Kniehl, Oleg L. Veretin
doaj   +1 more source

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