Results 51 to 60 of about 2,107 (142)

New soliton solutions of anti-self-dual Yang-Mills equations

Journal of High Energy Physics, 2020
We study exact soliton solutions of anti-self-dual Yang-Mills equations for G = GL(2) in four-dimensional spaces with the Euclidean, Minkowski and Ultrahyperbolic signatures and construct special kinds of one-soliton solutions whose action density TrF μν
Masashi Hamanaka, Shan-Chi Huang
doaj   +1 more source

Replicability of Functional Brain Networks: A Study Through the Lens of Seven Resting‐State Networks

Human Brain Mapping, Volume 47, Issue 8, June 1, 2026.
This study assesses the impact of preprocessing pipeline, 0.01–0.1 Hz band‐pass filtering, and brain parcellation on the replicability of functional connectivity estimates in seven resting‐state networks for multi‐site fMRI data. We find large effects for pipeline and parcellation on FC estimates, while band‐pass filtering has little effect.
Kaitlyn R. Fales, Xurui Zhi, Hyebin Song, Nicole A. Lazar   +3 more
wiley   +1 more source

Entanglement, soft modes, and celestial CFT

Journal of High Energy Physics
We revisit the calculation of vacuum entanglement entropy in free Maxwell theory in four-dimensional Minkowski spacetime. Weyl invariance allows for this theory to be embedded as a patch inside the Einstein static universe. We use conformal inversions to
Hong Zhe Chen, Robert C. Myers, Ana-Maria Raclariu   +2 more
doaj   +1 more source

Charges and Electromagnetic Radiation as Topological Excitations

Advances in High Energy Physics, 2017
We discuss a model with stable topological solitons in Minkowski space with only three degrees of freedom, the rotational angles of a spatial Dreibein. This model has four types of solitons differing in two topological quantum numbers which we identify ...
Manfried Faber
doaj   +1 more source

Optically Transparent Ka‐Band Absorber With Multi‐Fractal Rings and a Metal Mesh Ground Plane

Microwave and Optical Technology Letters, Volume 68, Issue 6, June 2026.
ABSTRACT An optically transparent absorber based on multi‐fractal ring resonators and a metal mesh ground plane is presented for Ka‐band applications. By merging multiple resonances, the proposed absorber maintains an absorption bandwidth from 25.8 to 31.1 GHz.
Junseong Bae, Seoyeong Min, Suho Chang, Daehyeon Kim, Donggeun An, Wonbin Hong, Youngno Youn   +6 more
wiley   +1 more source

Minkowskian Approach to the Pseudorange Navigation Equations

Universe
Our starting point is the covariant coordinate transformation equation of a relativistic positioning system in Minkowski space–time that maps the receiver’s emission coordinates (proper times broadcast by the emitters) to its coordinates in some inertial
Ramón Serrano Montesinos, Juan Antonio Morales-Lladosa   +1 more
doaj   +1 more source

Heterotic quantum cohomology

Journal of High Energy Physics, 2022
It is believed, but not demonstrated, that the large radius massless spectrum of a heterotic string theory compactified to four-dimensional Minkowski space should obey equations that split into ‘F-terms’ and ‘D-terms’ in ways analogous to that of four ...
Jock McOrist, Eirik Eik Svanes
doaj   +1 more source

Transient Porosity During Fluid‐Mineral Interaction. Part 1: In Situ 4D Tomography

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Fluid‐induced mineral replacement reactions play a key role in controlling porosity generation and permeability evolution in geologic systems. However, the dynamic feedback between pore structure development and fluid transport remains poorly quantified. This study investigates the spatiotemporal evolution of reaction‐induced pore space in the
Hamed Amiri, Vangelis Dialeismas, Damien Freitas, Roberto Rizzo, Alireza Chogani, Christian M. Schlepütz, Florian Fusseis, Oliver Plümper   +7 more
wiley   +1 more source

On the infrared divergence and global colour in N $$ \mathcal{N} $$ = 4 Yang-Mills theory

Journal of High Energy Physics, 2020
The N $$ \mathcal{N} $$ = 4 superconformal Yang-Mills theory on flat four-dimensional Minkowski space is a de-confined gauge theory in the sense that the string tension for fundamental representation coloured quarks vanishes.
Su Yu Ding, Joanna Karczmarek, Gordon W. Semenoff   +2 more
doaj   +1 more source

Transient Porosity During Fluid‐Mineral Interaction, Part 2: Reconstruction Using Generative AI

Journal of Geophysical Research: Solid Earth, Volume 131, Issue 6, June 2026.
Abstract Quantifying fluid–rock interactions within the lithosphere is vital for both geological processes and applications such as CO2 ${\text{CO}}_{2}$ storage and geothermal energy development. Mineral replacement reactions generate transient pore networks that enhance fluid flow, yet many pores become isolated once reactions are completed, reducing
Hamed Amiri, Vangelis Dialeismas, Damien Freitas, Roberto Rizzo, Alireza Chogani, Oliver Plümper   +5 more
wiley   +1 more source