QCD and strongly coupled gauge theories : challenges and perspectives

We highlight the progress, current status, and open challenges of QCD-driven physics, in theory and in experiment. We discuss how the strong interaction is intimately connected to a broad sweep of physical problems, in settings ranging from astrophysics and cosmology to strongly coupled, complex systems in particle and condensed-matter physics, as well as to searches for physics beyond the Standard Model. We also discuss how success in describing the strong interaction impacts other fields, and, in turn, how such subjects can impact studies of the strong interaction. In the course of the work we offer a perspective on the many research streams which flow into and out of QCD, as well as a vision for future developments.Peer reviewe

ICAR: endoscopic skull‐base surgery

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International Consensus Statement on Rhinology and Allergy: Rhinosinusitis

Background: The 5 years since the publication of the first International Consensus Statement on Allergy and Rhinology: Rhinosinusitis (ICAR‐RS) has witnessed foundational progress in our understanding and treatment of rhinologic disease. These advances are reflected within the more than 40 new topics covered within the ICAR‐RS‐2021 as well as updates to the original 140 topics. This executive summary consolidates the evidence‐based findings of the document. Methods: ICAR‐RS presents over 180 topics in the forms of evidence‐based reviews with recommendations (EBRRs), evidence‐based reviews, and literature reviews. The highest grade structured recommendations of the EBRR sections are summarized in this executive summary. Results: ICAR‐RS‐2021 covers 22 topics regarding the medical management of RS, which are grade A/B and are presented in the executive summary. Additionally, 4 topics regarding the surgical management of RS are grade A/B and are presented in the executive summary. Finally, a comprehensive evidence‐based management algorithm is provided. Conclusion: This ICAR‐RS‐2021 executive summary provides a compilation of the evidence‐based recommendations for medical and surgical treatment of the most common forms of RS

Calculations of atomic dynamics in simple liquid metals

2nd International Workshop on Amorphous and Nanostructured Chalcogenides -- JUN 20-24, 2005 -- Sinaia, ROMANIAWe present several dynamical properties of liquid Li, Rb, and Cs near their melting points. They have been evaluated within the framework of the mode-coupling theory, using a self-consistent scheme that uses as input data only the static structure functions and the interatomic pair potantials of the simple liquid metals. In this work we have used the interatomic pair potential which is derived from second order perturbation theory with Fiolhais electron-ion pseudopotential. We carried out theoretical results to compute single-particle and collective time-dependent properties of liquid metals, and thereby to calculate their self diffusion constants. We have discussed our results in comparison with both experiment and molecular dynamics simulation.Minist Educ & Res,ROMGAZ S

THERMODYNAMICS AND STRUCTURE OF LIQUID BINARY-ALLOYS CALCULATED USING AN ANALYTIC PAIR POTENTIAL

Analytic pair potentials proposed by Pettifor and Ward are developed using the Heine-Abarenkov pseudopotential for Li-Na, Na-K, and Na-Cs liquid binary alloys. The corresponding partial structure factors are calculated using the random-phase approximation. The calculated thermodynamic and structural properties using this real-space formalism are in good agreement with experiments

Liquid structure of some rare-earth metals using an analytic pair potential

The analytical Pettifor-Ward (PW) pair potential with the Ashcroft empty core model for the pseudopotential is employed to obtain structural properties of some liquid rare-earth metals. The liquid structure is calculated using the variational modified hypernetted chain (VMHNC) approximation. Recently proposed the modified Harrison model potential (MH) of Karmakar and Joarder has been calculated using the PW pair potentials for s electron contribution for comparison. A good agreement with the experimental data for structural properties has been found. However, VMHNC calculations using MH potential fail to yield reasonable results if one used Karmakar's data set

The liquid structure of CdTe alloy using the ameam potentials

2nd International Workshop on Amorphous and Nanostructured Chalcogenides -- JUN 20-24, 2005 -- Sinaia, ROMANIAThe structure of molten cadmium telluride have been calculated using the integral equation theories with the effective pair potentials based on the analytic modified embedded atom method (AMEAM). The pair interactions are described with the semi-empirical potential functions recently proposed Hu and co-workers. All the potential parameters for pure components are determined by fitting both liquid and solid state properties. The structural properties of liquid Cd-Te equiatomic alloy have been obtained using the Variational Modified Hypernetted Chain liquid state theory. The results of partial pair distribution functions are compared with the neutron diffraction data and those obtained by Stillinger-Weber semi-empirical potential.Minist Educ & Res,ROMGAZ S