Results 31 to 40 of about 73,015 (248)

Solving the Boundary Value Problems for Differential Equations with Fractional Derivatives by the Method of Separation of Variables

open access: yesMathematics, 2020
This paper is devoted to solving boundary value problems for differential equations with fractional derivatives by the Fourier method. The necessary information is given (in particular, theorems on the completeness of the eigenfunctions and associated ...
Temirkhan Aleroev
doaj   +1 more source

Nodal sets and growth exponents of Laplace eigenfunctions on surfaces

open access: yes, 2014
We prove a result, announced by F. Nazarov, L. Polterovich and M. Sodin that exhibits a relation between the average local growth of a Laplace eigenfunction on a closed surface and the global size of its nodal set.
Roy-Fortin, Guillaume
core   +1 more source

Topological Properties of Neumann Domains [PDF]

open access: yes, 2015
A Laplacian eigenfunction on a two-dimensional manifold dictates some natural partitions of the manifold; the most apparent one being the well studied nodal domain partition.
Band, Ram, Fajman, David
core   +1 more source

Eigenfunction concentration via geodesic beams [PDF]

open access: yes, 2020
In this article we develop new techniques for studying concentration of Laplace eigenfunctions $\phi_\lambda$ as their frequency, $\lambda$, grows. The method consists of controlling $\phi_\lambda(x)$ by decomposing $\phi_\lambda$ into a superposition of
Canzani, Yaiza, Galkowski, Jeffrey
core   +2 more sources

Accelerating Luminescence in Nanostructures: Exploring the Physical Limits and Impact of Ultrafast Emission in Nanoscale Materials

open access: yesAdvanced Photonics Research, EarlyView.
This review highlights recent advances in accelerating luminescence in nanostructures through cooperative emission, resonator coupling, and nonlocal light–matter interactions. By unifying concepts such as excitonic superradiance, superfluorescence, and the plasmonic Purcell effect, it reveals physical limits of ultrafast emission and their potential ...
Masaaki Ashida   +3 more
wiley   +1 more source

Bound state eigenfunctions need to vanish faster than $|x|^{-3/2}$

open access: yes, 2016
In quantum mechanics students are taught to practice that eigenfunction of a physical bound state must be continuous and vanishing asymptotically so that it is normalizable in $x\in (-\infty, \infty)$.
Ahmed, Zafar
core   +1 more source

A microlocal approach to eigenfunction concentration [PDF]

open access: yes, 2018
We describe a new approach to understanding averages of high energy Laplace eigenfunctions, $u_h$, over submanifolds, $$ \Big|\int _H u_hd\sigma_H\Big| $$ where $H\subset M$ is a submanifold and $\sigma_H$ the induced by the Riemannian metric on $M ...
Galkowski, Jeffrey
core   +3 more sources

Mathematical Prediction for Geometry‐Mediated Cell 3D In‐Growth on Bone Tissue Engineering Scaffolds

open access: yesAdvanced Science, EarlyView.
This study identifies a fundamental pore size dependent pattern of three dimensional bone marrow derived mesenchymal stem cell (BMSC) infiltration within porous scaffolds, where small pores promote horizontal cellular bridging and large pores facilitate vertical migration.
Xiang Gao   +15 more
wiley   +1 more source

Eigenfunctions in Finsler Gaussian solitons

open access: yesOpen Mathematics, 2023
Gaussian solitons are important examples in the theory of Riemannian measure space. In the first part, we explicitly characterize the first eigenfunctions of the drift Laplacian in a Gaussian shrinking soliton, which shows that apart from each coordinate
Liu Caiyun, Yin Songting
doaj   +1 more source

Additional symmetries of constrained CKP and BKP hierarchies

open access: yes, 2010
The additional symmetries of the constrained CKP (cCKP) and BKP (cBKP) hierarchies are given by their actions on the Lax operators, and their actions on the eigenfunction and adjoint eigenfunction $\{\Phi_i,\Psi_i \}$ are presented explicitly ...
A. Alexandrov   +31 more
core   +1 more source

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