Results 81 to 90 of about 95,620 (293)

Spectral characteristics of a nonlocal problem for two linear systems of partial differential equations

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
We study the boundary-value problem for a linear system of differential equations written in the form of differential-operator equations $$ aD_t u(t)+bBu(t)=f(t) $$ with nonlocal boundary conditions at $t$.
Dmitriy V Kornienko
doaj   +1 more source

Photo‐Excitations in Halide Perovskites: Where Do Simulations and Experiments Meet?

Laser &Photonics Reviews, EarlyView.
Aiming to bridge the gap between simulations and measurements of light–matter couplings and photo‐excitations in new functional materials, this perspective highlights insights and bottlenecks of state‐of‐the‐art experimental and theoretical methods (2D electronic spectroscopy vs.
Muhammad Sufyan Ramzan, Antonietta De Sio, Alexander Steinhoff, Frank Jahnke, Christoph Lienau, Caterina Cocchi   +5 more
wiley   +1 more source

Nonlocal quasivariational evolution problems

Journal of Differential Equations, 2006
This is a valuable paper indeed. The existence of the evolution problem \[ u'(t)+\partial\varphi(u,t,u(t))\ni 0 \] with \(u(0)=u_0\) in a Hilbert space \(H\) is studied. We emphasize the functional dependence of \(\varphi\) on \(u\) in order to take into account nonlocal in time effects.
openaire   +3 more sources

The nonlocal boundary problem with perturbations of antiperiodicity conditions for the eliptic equation with constant coefficients

Karpatsʹkì Matematičnì Publìkacìï, 2018
In this article, we investigate a problem with nonlocal boundary conditions which are perturbations of antiperiodical conditions in bounded $m$-dimensional parallelepiped using Fourier method. We describe properties of a transformation operator $R:L_2(G)
Ya.O. Baranetskij, I.Ya. Ivasiuk, P.I. Kalenyuk, A.V. Solomko   +3 more
doaj   +1 more source

M-matrices and convergence of finite difference scheme for parabolic equation with integral boundary condition

Mathematical Modelling and Analysis, 2020
In the paper, the stability and convergence of difference schemes approximating semilinear parabolic equation with a nonlocal condition are considered.
Regimantas Čiupaila, Mifodijus Sapagovas, Kristina Pupalaigė   +2 more
doaj   +1 more source

One-loop analysis with nonlocal boundary conditions

, 2019
In the eighties, Schroder studied a quantum mechanical model where the stationary states of Schrodinger's equation obey nonlocal boundary conditions on a circle in the plane.
Di Grezia, Elisabetta, Esposito, Giampiero   +1 more
core   +1 more source

Bridging Classical and Quantum Approaches for Quantitative Sensing of Turbid Media with Polarization‐Entangled Photons

Laser &Photonics Reviews, EarlyView.
This work bridges classical and quantum polarimetry toward quantitative quantum photonic sensing of turbid environments. Theoretical and experimental investigations reveal how polarization‐entangled photonic states evolve in turbid media, uncovering robust trends in entanglement evolution and paving the way for advanced quantum sensing in biomedical ...
Vira R. Besaga, Ivan V. Lopushenko, Oleksii Sieryi, Alexander Bykov, Frank Setzpfandt, Igor Meglinski   +5 more
wiley   +1 more source

Quantum networks reveal quantum nonlocality

, 2010
The results of local measurements on some composite quantum systems cannot be reproduced classically. This impossibility, known as quantum nonlocality, represents a milestone in the foundations of quantum theory.
A Acín, A Acín, A Sen De, AA Methot, C-E Bardyn, D Collins, D Collins, D Svetlichny, H Buhrman, I Devetak, J Barrett, J Barrett, JF Clauser, JS Bell, L Masanes, M Forster, M Seevinck, ML Almeida, ML Almeida, N Brunner, RF Werner, RF Werner, S Pironio, S Popescu, S Popescu, T Vértesi, Y-C Liang   +26 more
core   +1 more source

Advances in Position‐Momentum Entanglement: A Versatile Tool for Quantum Technologies

Laser &Photonics Reviews, EarlyView.
Position–momentum entanglement constitutes a high‐dimensional continuous‐variable resource in quantum optics. Recent advances in its generation, characterization, and control are reviewed, with emphasis on spontaneous parametric down‐conversion and modern measurement techniques.
Satyajeet Patil, Rajshree Swarnkar, Jonas L. Moos, Sebastian Töpfer, Sergio Tovar‐Pérez, Jorge Fuenzalida, Markus Gräfe   +6 more
wiley   +1 more source

STATIONARY PROBLEMS WITH NONLOCAL BOUNDARY CONDITIONS

Mathematical Modelling and Analysis, 2001
In this article a stationary problems with general nonlocal boundary conditions is considered. The differential problems and finite difference schemes for solving this problem are investigated. Stability estimates are proved in the maximum norm and the non‐negativity of the solution is investigated.
Čiegis, R., Štikonas, A., Štikoniene, O., Suboč, O.   +3 more
openaire   +5 more sources