Results 1 to 10 of about 1,664,123 (378)

Persistence of a Brownian particle in a Time Dependent Potential

open access: yes, 2012
We investigate the persistence probability of a Brownian particle in a harmonic potential, which decays to zero at long times -- leading to an unbounded motion of the Brownian particle.
D. Chakraborty   +3 more
core   +1 more source

Exponential decay in the stark effect [PDF]

open access: yesCommunications in Mathematical Physics, 1980
LetH=−Δ+V+Fx1 withV(x1,x⊥) analytic in the first variable andV(x1+ia, x⊥) bounded and decreasing to zero asx → ∞ for eacha ∈ ℝ. Let ψ be an eigenvector of −Δ+V with negative eigenvalue. Among our results we show that forF≠0, (ψ,e−Hψ) decays exponentially at a rate governed by the positions of the resonances ofH.
openaire   +3 more sources

Non-exponential and polynomial stability results of a Bresse system with one infinite memory in the vertical displacement

open access: yesNonautonomous Dynamical Systems, 2017
The asymptotic stability of one-dimensional linear Bresse systems under infinite memories was obtained by Guesmia and Kafini [10] (three infinite memories), Guesmia and Kirane [11] (two infinite memories), Guesmia [9] (one infinite memory acting on the ...
Guesmia Aissa
doaj   +1 more source

Fidelity Decay as an Efficient Indicator of Quantum Chaos

open access: yes, 2002
Recent work has connected the type of fidelity decay in perturbed quantum models to the presence of chaos in the associated classical models. We demonstrate that a system's rate of fidelity decay under repeated perturbations may be measured efficiently ...
C. Zalka   +12 more
core   +1 more source

exponential decay

open access: yes, 2014
Citation: 'exponential decay' in the IUPAC Compendium of Chemical Terminology, 3rd ed.; International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. 10.1351/goldbook.E02275 • License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International for individual terms.
openaire   +1 more source

Three-bottle exponential decay infusion: A novel intravenous infusion strategy for drugs which conform to three-compartment model with observations on propofol kinetics

open access: yesBangladesh Journal of Pharmacology, 2012
The aim of this study is to develop a novel three-bottle exponential decay infusion method to achieve the steady state concentration rapidly for drugs which conform to three-compartment model.
Xiao-Hui Huang   +4 more
doaj   +1 more source

Polynomial decay rate for a new class of viscoelastic Kirchhoff equation related with Balakrishnan-Taylor dissipation and logarithmic source terms

open access: yesAlexandria Engineering Journal, 2020
In this paper, a polynomial decay rate of Kirchhoff’s nonlinear viscoelastic viscoelastic equation solution related with Balakrishnan-Taylor dissipation solution and logarithmic source terms is obtained, where we obtain the result of energy decay of ...
Salah Boulaaras
doaj   +1 more source

Schottky anomaly observed in 31P NMR for 31P-doped Si

open access: yesJournal of Analytical Science and Technology, 2010
The Schottky anomaly, which happens when the heat capacity of nuclei is comparable to that of electrons, was observed in NMR for phosphorous doped silicon. The anomaly appears as an abnormal double exponential decay in the nuclear spin relaxation at very
Soonchil Lee   +2 more
doaj  

MAMGD: Gradient-Based Optimization Method Using Exponential Decay

open access: yesTechnologies
Optimization methods, namely, gradient optimization methods, are a key part of neural network training. In this paper, we propose a new gradient optimization method using exponential decay and the adaptive learning rate using a discrete second-order ...
Nikita Sakovich   +3 more
doaj   +1 more source

Boundary Stabilization of Memory Type for the Porous-Thermo-Elasticity System

open access: yesAbstract and Applied Analysis, 2009
We consider the one-dimensional viscoelastic Porous-Thermo-Elastic system. We establish a general decay results. The usual exponential and polynomial decay rates are only special cases.
Abdelaziz Soufyane   +2 more
doaj   +1 more source

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