Results 81 to 90 of about 487,040 (231)
Results and techniques for higher order calculations within the gradient-flow formalism
Journal 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
, 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
Mid‐Infrared Free‐Space Optical Communications: Technologies, Demonstrations and Future Directions
IET 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
An Overview of Scale Invariance in Proton Structure With Holographic Insights
Advances 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
Problems with finite density simulations of lattice QCD [PDF]
, 1986 Barbour I, Behilil N-E, Dagotto E, et al. Problems with finite density simulations of lattice QCD. Nuclear Physics, B. 1986;275(2):296-318.We present a discussion of problems that have arisen in attempts to understand the behavior of lattice QCD at high ...
Karsch, Frithjof +6 more
core +1 more source
On the power divergence in quasi gluon distribution function
Journal 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
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Bilinear quark operators in the RI/SMOM scheme at three loops
Physics 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
String breaking in lattice QCD [PDF]
Nuclear Physics B - Proceedings Supplements, 1999 The separation of a heavy quark and antiquark pair leads to the formation of a tube of flux, or string, which should break in the presence of light quark-antiquark pairs. This expected zero temperature phenomenon has proven elusive in simulations of lattice QCD.
Laermann, Edwin +3 more
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Advances in High Energy Physics, Volume 2026, Issue 1, 2026.In this paper, we presented an approximate analytical treatment of the Coulomb plus logarithmic potential using time‐independent perturbation theory to investigate the mass spectra of bottomonium and charmonium mesons for the low‐order quantum states.
E. Omugbe +4 more
wiley +1 more source
Advances 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