Results 51 to 60 of about 641 (64)

Fundamental noise limitations to supercontinuum generation in microstructure fiber

open access: yes, 2002
Broadband noise on supercontinuum spectra generated in microstructure fiber is shown to lead to amplitude fluctuations as large as 50 % for certain input laser pulse parameters.
Coen, S.   +6 more
core   +2 more sources

Worm Structure in Modified Swift-Hohenberg Equation for Electroconvection

open access: yes, 1997
A theoretical model for studying pattern formation in electroconvection is proposed in the form of a modified Swift-Hohenberg equation. A localized state is found in two dimension, in agreement with the experimentally observed ``worm" state.
E. Bodenschatz   +18 more
core   +1 more source

Replicate Periodic Windows in the Parameter Space of Driven Oscillators

open access: yes, 2011
In the bi-dimensional parameter space of driven oscillators, shrimp-shaped periodic windows are immersed in chaotic regions. For two of these oscillators, namely, Duffing and Josephson junction, we show that a weak harmonic perturbation replicates these ...
Baptista   +34 more
core   +1 more source

Restricted random walk model as a new testing ground for the applicability of q-statistics

open access: yes, 2011
We present exact results obtained from Master Equations for the probability function P(y,T) of sums $y=\sum_{t=1}^T x_t$ of the positions x_t of a discrete random walker restricted to the set of integers between -L and L.
C. Tsallis   +12 more
core   +1 more source

OpenMP Fortran and C programs for solving the time-dependent Gross-Pitaevskii equation in an anisotropic trap

open access: yes, 2016
We present new version of previously published Fortran and C programs for solving the Gross-Pitaevskii equation for a Bose-Einstein condensate with contact interaction in one, two and three spatial dimensions in imaginary and real time, yielding both ...
Adhikari, Sadhan K.   +4 more
core   +2 more sources

The inverse scattering problem at fixed energy based on the Marchenko equation for an auxiliary Sturm-Liouville operator

open access: yes, 2012
A new approach is proposed to the solution of the quantum mechanical inverse scattering problem at fixed energy. The method relates the fixed energy phase shifts to those arising in an auxiliary Sturm-Liouville problem via the interpolation theory of the
Apagyi B   +13 more
core   +1 more source

Comment on `conservative discretizations of the Kepler motion'

open access: yes, 2009
We show that the exact integrator for the classical Kepler motion, recently found by Kozlov ({\it J. Phys. A: Math. Theor.\} {\bf 40} (2007) 4529-4539), can be derived in a simple natural way (using well known exact discretization of the harmonic ...
Agarwal R P   +8 more
core   +1 more source

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