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We exhibit in a model with simple dynamics, specifically a particle in a square box or two particles in one dimensional boxes, that if an experimenter can prepare the initial wave function of a system, the maximal information about the…

量子物理 · 物理学 2019-02-12 Robert C. Helling

Local symmetries are spatial symmetries present in a subdomain of a complex system. By using and extending a framework of so-called non-local currents that has been established recently, we show that one can gain knowledge about the…

量子物理 · 物理学 2017-04-26 Malte Röntgen , Christian V. Morfonios , Fotios Diakonos , Peter Schmelcher

We study the local behavior of weak solutions, with possible singularities, of nonlocal nonlinear equations. We first prove that sets of capacity zero are removable for weak solutions under certain integrability conditions. We then…

偏微分方程分析 · 数学 2025-07-09 Minhyun Kim , Se-Chan Lee

In this paper, we study the probabilistic local well-posedness of the cubic Schr\"odinger equation (cubic NLS): \[ (i\partial_{t} + \Delta) u = \pm |u|^{2} u \text{ on } [0,T) \times \mathbb{R}^{d}, \] with initial data being a Wiener…

偏微分方程分析 · 数学 2024-04-10 Jean-Baptiste Casteras , Juraj Foldes , Gennady Uraltsev

A nonlocal-in-time problem for the abstract Schr\"odinger equation is considered. By exploiting the linear nature of nonlocal condition we derive an exact representation of the solution operator under assumptions that the spectrum of…

数学物理 · 物理学 2018-08-31 Dmytro Sytnyk , Roderick Melnik

The dynamics of a particle in an expanding cavity is investigated in the Klein-Gordon framework in a regime in which the single particle picture remains valid. The cavity expansion represents a time-dependent boundary condition for the…

量子物理 · 物理学 2020-08-26 S. Colin , A. Matzkin

The concept of local symmetry is a powerful tool in predicting complex transport phenomena in aperiodic media. A nonlocal continuity formalism reveals how local symmetries are encoded into the dynamics of light propagation in discrete…

The basic characteristics of the classical many-particle (''macroscopic'') systems are notoriously hard to reproduce in quantum theory. In this paper we show that this is not the case for certain many-particle systems within the recently…

量子物理 · 物理学 2025-03-03 J. Jeknic-Dugic , M. Arsenijevic , M. Dugic

In this paper we consider a 2D nonlinear and nonlocal model describing the dynamics of the dislocation densities. We prove the local well-posedness of strong solution to this system in the suitable functional framework, and we show the…

偏微分方程分析 · 数学 2014-05-30 Dong Li , Changxing Miao , Liutang Xue

Two parts of an entangled quantum state can have a correlation in their joint behavior under measurements that is unexplainable by shared classical information. Such correlations are called non-local and have proven to be an interesting…

量子物理 · 物理学 2009-03-25 Manuel Forster , Severin Winkler , Stefan Wolf

We consider the derivative nonlinear Schr\"odinger equation on the real line, with a background function $\psi(t,x)\in L^\infty(\mathbb{R}^2)$ that satisfies suitable conditions. Such a function may, for example, be a non-decaying solution…

偏微分方程分析 · 数学 2025-05-28 Luc Molinet , Tomoyuki Tanaka

In this paper we show numerically that for nonlinear Schrodinger type systems the presence of nonlocal perturbations can lead to a beyond-all-orders instability of stable solutions of the local equation. For the specific case of the…

软凝聚态物质 · 物理学 2015-06-24 Bernard Deconinck , J. Nathan Kutz

It is is explained why physical consistency requires substituting linear observables by nonlinear ones for quantum systems with nonlinear time evolution of pure states. The exact meaning and the concrete physical interpretation are…

量子物理 · 物理学 2007-05-23 W. Luecke

We deal with the existence of solutions having L2 regularity for a class of non autonomous evolution equations. Associated with the equation, a general non local condition is studied. The technique we used combines a finite dimensional…

偏微分方程分析 · 数学 2022-07-13 Vittorio Colao , Luigi Muglia

We establish existence of positive non-decreasing radial solutions for a nonlocal nonlinear Neumann problem both in the ball and in the annulus. The nonlinearity that we consider is rather general, allowing for supercritical growth (in the…

偏微分方程分析 · 数学 2022-07-01 Eleonora Cinti , Francesca Colasuonno

Recently, several claims have been made that certain fundamental problems of distributed computing, including Leader Election and Distributed Consensus, begin to admit feasible and efficient solutions when the model of distributed…

量子物理 · 物理学 2009-03-09 Cyril Gavoille , Adrian Kosowski , Marcin Markiewicz

Orthogonal product sets that are locally irreducible in every bipartition have the strongest nonlocality while also need a large number of quantum states. In this paper, we construct the orthogonal product sets with strong quantum…

量子物理 · 物理学 2025-03-13 Huaqi Zhou , Ting Gao , Fengli Yan

We consider the localized modes (bright solitons) described by one-dimensional quintic nonlinear Schrodinger equation with a periodic potential. In the case of attractive nonlinearity we deduce sufficient conditions for collapse. We show…

斑图形成与孤子 · 物理学 2007-05-23 G. L. Alfimov , V. V. Konotop , P. Pacciani

Entanglement is one of the strongest quantum correlation, and is a key ingredient in fundamental aspects of quantum mechanics and a resource for quantum technologies. While entanglement theory is well settled for distinguishable particles,…

量子物理 · 物理学 2021-08-27 Till Jonas Frederick Johann , Ugo Marzolino

We are concerned with the two-power nonlinear Schr\"odinger-type equations with non-local terms. We consider the framework of Sobolev-Lorentz spaces which contain singular functions with infinite-energy. Our results include global…

偏微分方程分析 · 数学 2019-10-02 Vanessa Barros , Lucas C. F. Ferreira , Ademir Pastor