Article
Astronomy & Astrophysics
Hengyuan Guo
Summary: This paper analytically calculates the leading quantum correction to the form factor of the 04 kink using known analytic results and a kink wave packet construction. The properties of the form factor are discussed in general and in the ultrarelativistic meson case, and the results are numerically checked.
Article
Physics, Particles & Fields
Tiberio de Paula Netto, Leonardo Modesto, Ilya L. Shapiro
Summary: This study derives effective quantum gravity corrections to Newton's potential using the whole effective quantum field theory approach. By omitting diagrams with internal lines of the massive sources and recalculating the corrections using functional methods, new strong arguments are provided in favor of this approach. The gauge- and parametrization-independence and the universality of the results are also demonstrated regardless of the details of the ultraviolet completion of quantum gravity theory.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Ecology
Mengjie Wang, Qinfeng Guo, Anping Chen
Summary: This study used satellite data to analyze the changes in tropical forests in mainland Southeast Asia. The results showed that during the period from 2000 to 2020, tropical forests gradually transformed into savannahs, and the reasons for this transformation varied in different time periods. In the early period, the increase in savannahs was mainly due to tree regeneration from grasslands, while in the recent period, the degradation of forests was the main cause. This study provides important references for land management and tropical forest protection.
Article
Geochemistry & Geophysics
Wellington P. Oliveira, Gelvam A. Hartmann, Filipe Terra-Nova, Daniele Brandt, Andrew J. Biggin, Yael A. Engbers, Richard K. Bono, Jairo F. Savian, Daniel R. Franco, Ricardo I. F. Trindade, Thiago R. Moncinhatto
Summary: The study investigates the latitudinal structure of paleosecular variation (PSV) and the time-averaged field (TAF) for the Brunhes normal and Matuyama reverse chrons over the past 10 million years. Statistical analysis reveals a low latitudinal dependence of PSV and an apparent hemispheric PSV asymmetry, with a stronger latitudinal signature in the southern hemisphere.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Physics, Particles & Fields
Martin Beneke, Patrick Hager, Robert Szafron
Summary: Soft-collinear gravity is an effective field theory that describes the interaction of collinear and soft gravitons with matter. It exhibits similarities with soft-collinear effective theory of QCD, revealing an emergent soft background gauge symmetry and controlling the collinear field components and inherent inhomogeneity in lambda of invariant objects. This results in a consistent expansion.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Astronomy & Astrophysics
Eric Braaten, Li-Ping He, Jun Jiang
Summary: XEFT is a low-energy effective field theory for charm mesons and pions that systematically improves the description of the X(3872) resonance. A new formulation and renormalization scheme have been introduced to simplify calculations in XEFT, which involve a new dynamical field for a pair of charm mesons and a subtraction of amplitudes at the complex D*(0)-(D) over bar (0) threshold. These are illustrated by calculating the complex pole energy of X and the D*(0)-(D) over bar (0) scattering amplitude to next-to-leading order using Galilean-invariant XEFT.
Article
Physics, Multidisciplinary
Roman N. Lee, Matthew D. Schwartz, Xiaoyuan Zhang
Summary: An analytic formula is provided for the total scattering cross section of an electron and a photon at order alpha(3) in QED, including both real-emission and virtual Compton scattering contributions. When combined with the recent analytic result for the pair-production cross section, the complete alpha(3) cross section is determined. Modern multiloop calculation techniques are used to compute the next-to-leading order calculation and pair-production cross section.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Di Qiu, Pengyang Zhao, Dallas R. Trinkle, Yunzhi Wang
Summary: The study predicts the effect of stress on the dislocation core structure using a microscopic phase-field model with subatomic resolution, revealing non-Schmid behavior and significant impact on the Peierls stress.
MATERIALS RESEARCH LETTERS
(2021)
Article
Engineering, Aerospace
Matteo Moioli, Christian Breitsamter, Kaare A. Sorensen
Summary: Low-aspect ratio wing planforms, such as delta wings, are predominantly affected by large-scale leading-edge vortices. Numerical simulations using Reynolds-averaged Navier-Stokes equations are commonly used, but limitations in ordinary models and high computational costs hinder accuracy. This study proposes an improved one-equation eddy-viscosity model with additional vortex source terms and a calibration procedure for enhanced accuracy.
Article
Geochemistry & Geophysics
Richard K. Bono, Greig A. Paterson, Annique van der Boon, Yael A. Engbers, J. Michael Grappone, Benjamin Handford, Louise M. A. Hawkins, Simon J. Lloyd, Courtney J. Sprain, Daniele Thallner, Andrew J. Biggin
Summary: The updated PINT database provides crucial constraints on the evolution of Earth's deep interior and its magnetic environment, with a trend towards increasing quality of data in studies published after the year 2000. The spatio-temporal distribution analysis reveals biases towards young records in the Northern hemisphere and intervals with little to no data in the Palaeozoic and Precambrian.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2022)
Article
Geochemistry & Geophysics
Haijian Lu, Xinwen Cao, Marco G. Malusa, Zhiyong Zhang, Jiawei Pan, Haibing Li
Summary: This study presents a high-resolution and continuous record of anisotropy of magnetic susceptibility and paleomagnetic declination to investigate the mechanisms of northern Tibet crustal thickening. The results reveal two major clockwise rotations of the paleostress field at 15 Ma and 8.4 Ma, coinciding with episodes of mountain building and basin deformation. It is suggested that the rotations are related to slowing lateral-extrusion tectonics along strike-slip faults.
Article
Multidisciplinary Sciences
Hungyen Chen, Yi-Chien Wu, Chih-Yung Teng
Summary: This study assessed the effects of climate variables on rice yield and their temporal variations over a long-term period using field experiments conducted in Taiwan from 1925 to 2019. The results showed that temperature, diurnal temperature range (DTR), rainfall, and sunshine duration had significant impacts on rice yield. The effects of these climate variables varied during different cropping seasons, with temperature and DTR having a stronger influence during the cool season, while all the variables had negative effects during the warm season.
Article
Automation & Control Systems
Jianwei Guo, Dong Zhu, Yujun Yang
Summary: A new blade flow mode with independent electrolyte supply at the leading and trailing edges was proposed to improve flow field uniformity. Flow field simulations showed that electrolyte distribution in this new mode is more uniform and velocity change is smaller along the flow path. Experimental investigations confirmed that the new flow mode significantly enhanced surface roughness and contour accuracy of the leading and trailing edges.
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
(2021)
Article
Chemistry, Medicinal
Emmanuelle Bignon, Antonio Monari
Summary: This article investigates the RNA genome replication mechanism of the SARS-CoV-2 virus. Through calculations and simulations, the high efficiency of the viral polymerase and the unique active site of the enzyme are discovered. The results contribute to the future design of antiviral drugs.
JOURNAL OF CHEMICAL INFORMATION AND MODELING
(2022)
Article
Physics, Particles & Fields
Joseph Karpie, Kostas Orginos, Anatoly Radyushkin, Savvas Zafeiropoulos
Summary: In this study, continuum limit results for the unpolarized parton distribution function of the nucleon in lattice QCD are presented. The pseudo-PDF approach with Short Distance Factorization was utilized for the first time, and findings were compared with phenomenological determinations. The sGEVP technique was employed to optimize control over excited state contamination in calculations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)