Results 71 to 80 of about 30,073,885 (280)

Open quantum systems and Random Matrix Theory

open access: yes, 2014
A simple model for open quantum systems is analyzed with Random Matrix Theory. The system is coupled to the continuum in a minimal way. In this paper we see the effect of opening the system on the level statistics, in particular the $\Delta_3(L ...
Mulhall, Declan
core   +1 more source

Avoided intersections of nodal lines

open access: yes, 2002
We consider real eigen-functions of the Schr\"odinger operator in 2-d. The nodal lines of separable systems form a regular grid, and the number of nodal crossings equals the number of nodal domains.
Alejandro G Monastra   +14 more
core   +1 more source

Integrable random matrix ensembles

open access: yes, 2011
We propose new classes of random matrix ensembles whose statistical properties are intermediate between statistics of Wigner-Dyson random matrices and Poisson statistics.
Bogomolny, E., Giraud, O., Schmit, C.
core   +2 more sources

Non-Stationary Random Response of MDOF Duffing Systems

open access: yesShock and Vibration, 2004
This paper presents a method to solve non-stationary random responses of nonlinear multi-degrees-of-freedom (MDOF) Duffing systems subjected to evolutionary random excitations.
J.H. Lin, J. Wang, Y.H. Zhang
doaj   +1 more source

Considering Random Factors in Modeling Complex Microeconomic Systems

open access: yesMathematics, 2020
Within the framework of a model describing real-functioning association of three enterprises, numerical calculations of economic dynamics parameters considering fluctuating market demand for the goods were performed.
Oksana Hoshovska   +3 more
doaj   +1 more source

Two Connections Between Random Systems and Non-Gibbsian Measures [PDF]

open access: yes, 2006
In this contribution we discuss the role disordered (or random) systems have played in the study of non-Gibbsian measures. This role has two main aspects, the distinction between which has not always been fully clear: 1) From disordered systems ...
A. V. Enter, C. Külske
semanticscholar   +1 more source

Annihilating random walks in one-dimensional disordered media

open access: yes, 1998
We study diffusion-limited pair annihilation $A+A\to 0$ on one-dimensional lattices with inhomogeneous nearest neighbour hopping in the limit of infinite reaction rate. We obtain a simple exact expression for the particle concentration $\rho_k(t)$ of the
Mussawisade, K., Schütz, G. M.
core   +1 more source

Effect of a Nutritional Support System (Diet and Supplements) for Improving Gross Motor Function in Cerebral Palsy: An Exploratory Randomized Controlled Clinical Trial [PDF]

open access: gold, 2020
Fernando Leal-Martínez   +9 more
openalex   +1 more source

Random dynamical systems on time scales

open access: yesElectronic Journal of Differential Equations, 2012
The purpose of this paper is to prove the existence and uniqueness of solution for random dynamic systems on time scales.
Cristina Lungan, Vasile Lupulescu
doaj  

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