Results 91 to 100 of about 66,959 (230)

Tessellation Groups, Harmonic Analysis on Non‐Compact Symmetric Spaces and the Heat Kernel in View of Cartan Convolutional Neural networks

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
ABSTRACT In this paper, we continue the development of the Cartan neural networks programme, launched with three previous publications, by focusing on some mathematical foundational aspects that we deem necessary for our next steps forward. The mathematical and conceptual results are diverse and span various mathematical fields, but the inspiring ...
Pietro Fré   +4 more
wiley   +1 more source

Improvement of Pointwise Bounds for Eigenfunctions in the Quantum Completely Integrable System

open access: yesMathematics
On a compact n-dimensional Riemannian manifold without boundary (M,g), it is well-known that the L2-normalized Laplace eigenfunctions with semiclassical parameter h satisfy the universal L∞ growth bound of O(h1−n2)ash→0+.
Xianchao Wu
doaj   +1 more source

Eigenfunctions and nodal sets [PDF]

open access: yesSurveys in Differential Geometry, 2013
60 pages, 5 figures lifted from the web.
openaire   +2 more sources

Quantum Dust Cores of Black Holes and Their Quasi‐Normal Modes

open access: yesFortschritte der Physik, Volume 74, Issue 4, April 2026.
We investigate the quasi‐normal mode spectrum of a gravitationally collapsed ball of dust, considering both a linear and a refined parabolic effective mass function for the quantum core. Furthermore, we account for the quantum leakage of dust particles outside the horizon.
T. Bambagiotti   +4 more
wiley   +1 more source

Phonon‐Induced Markovian and Non‐Markovian Effects on Absorption Spectra of Moiré Excitons in Twisted Transition Metal Dichalcogenide Bilayers

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 4, April 2026.
The twist angle dependence of phonon‐assisted optical absorption by moiré excitons in TMDC bilayers is studied based on a time convolutionless master equation. Small angles yield phonon‐induced absorption properties known from quantum dots or color centers reflecting non‐Markovian features, while larger angles produce absorption spectra similar to ...
Daniel Groll   +4 more
wiley   +1 more source

Optimal Recovery of Rayleigh‐Wave Overtones by Multi‐Directional Acquisition

open access: yesGeophysical Research Letters
Rayleigh waves are ubiquitously used for subsurface characterization through dispersion curve inversion, whose quality depends on the number of useable overtones.
A. Lellouch, E. Shimony, P. Sinitsyn
doaj   +1 more source

Experimental Characterization and Modeling of High Hole Mobility GeSn Quantum Wells: The Role of Alloy Disorder Scattering

open access: yesSmall Science, Volume 6, Issue 4, April 2026.
This study reports record‐high hole mobility in undoped GeSn quantum wells, validated through magnetotransport measurements. By modeling the transport properties, the authors discover that alloy scattering in their material is significantly weaker than predicted for random alloys and previously studied materials.
Troy A. Hutchins‐Delgado   +18 more
wiley   +1 more source

Torsion and ground state maxima: close but not the same

open access: yes, 2015
Could the location of the maximum point for a positive solution of a semilinear Poisson equation on a convex domain be independent of the form of the nonlinearity? Cima and Derrick found certain evidence for this surprising conjecture.
Benson, Brian A.   +3 more
core  

Normal Modes in a Coupled Earth Model: A New Perspective on the Compliance Method

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract To understand the compliance parameters observed for atmospheric pressure waves, we develop a normal‐mode approach for a coupled Earth model that includes the atmosphere and the solid Earth. Extending the method of Press and Harkrider to a coupled Earth model, we introduce two new features.
Toshiro Tanimoto
wiley   +1 more source

An Epigenetic Clock for Accurate Age Prediction in Atlantic Cod Populations for Improved Fisheries Management

open access: yesMolecular Ecology Resources, Volume 26, Issue 3, April 2026.
ABSTRACT Fisheries management relies on accurate stock assessments, which in turn depend on precise age information. Recent molecular tools called ‘epigenetic clocks’ harness age‐related DNA methylation changes to build accurate and precise age‐prediction models.
Dafni Anastasiadi   +5 more
wiley   +1 more source

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