Results 171 to 180 of about 447,860 (319)

The One‐Dimensional Coulomb Hamiltonian: Properties of Its Birman–Schwinger Operator

open access: yesMathematical Methods in the Applied Sciences, Volume 48, Issue 12, Page 11813-11822, August 2025.
ABSTRACT The objective of the present paper is to study in detail the properties of the Birman–Schwinger operator for a self‐adjoint realization of the one‐dimensional Hamiltonian with the Coulomb potential, both when the Hamiltonian is defined only on ℝ+$$ {\mathbb{R}}_{+} $$ and when it is defined on the whole real line.
S. Fassari   +4 more
wiley   +1 more source

Smoothed Moreau‐Yosida Tensor‐Train Approximation of State‐Constrained Optimization Problems Under Uncertainty

open access: yesNumerical Linear Algebra with Applications, Volume 32, Issue 4, August 2025.
ABSTRACT We propose an algorithm to solve optimization problems constrained by ordinary or partial differential equations under uncertainty, with additional almost sure inequality constraints on the state variable. To alleviate the computational burden of high‐dimensional random variables, we approximate all random fields by the tensor‐train (TT ...
Harbir Antil   +2 more
wiley   +1 more source

Automatic Signal Discrimination Using Machine Learning on the Data From the Central and Eastern European Infrasound Network

open access: yesJournal of Geophysical Research: Atmospheres, Volume 130, Issue 14, 28 July 2025.
Abstract A labeled data set of 216,681 infrasound detections was compiled using data from the Central and Eastern European Infrasound Network (CEEIN). Detections associated with quarry blasts, thunderstorms, eruptions of the Etna volcano, industrial activity, and the war in Ukraine were categorized using ground truth information, such as seismic and ...
Marcell Pásztor   +7 more
wiley   +1 more source

Axion‐Like Interactions and CFT in Topological Matter, Anomaly Sum Rules and the Faraday Effect

open access: yesAdvanced Physics Research, Volume 4, Issue 7, July 2025.
This review investigates the connection between chiral anomalies and their manifestation in topological materials, using both perturbative methods based on ordinary quantum field theory and conformal field theory (CFT). It emphasizes the role of CFT in momentum space for parity‐odd correlation functions, and their reconstruction by the inclusion of a ...
Claudio Corianò   +4 more
wiley   +1 more source

Advances in Isotope Labeling for Solution Nucleic Acid Nuclear Magnetic Resonance Spectroscopy

open access: yesChemPlusChem, Volume 90, Issue 7, July 2025.
Recent advances in the field of nucleic acid nuclear magnetic resonance (NMR) are presented. Stable isotope labeling protocols and new approaches to segmentally label nucleic acid with NMR‐active residues are summarized. The novel methods will have a strong impact on the future of nucleic acid NMR and the characterization of structure and dynamics of ...
Stefan Hilber   +3 more
wiley   +1 more source

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