Results 91 to 100 of about 202,573 (195)

Wave chaos as signature for depletion of a Bose-Einstein condensate

, 2012
We study the expansion of repulsively interacting Bose-Einstein condensates (BECs) in shallow one-dimensional potentials. We show for these systems that the onset of wave chaos in the Gross-Pitaevskii equation (GPE), i.e.
Alexej I. Streltsov, Axel U. J. Lode, D. Pines, Iva Březinová, Joachim Burgdörfer, Lorenz S. Cederbaum, Ofir E. Alon, P. G. Drazin, R. J. Glauber   +8 more
core   +3 more sources

Spreading of wave packets in disordered systems with tunable nonlinearity

, 2010
We study the spreading of single-site excitations in one-dimensional disordered Klein-Gordon chains with tunable nonlinearity $|u_{l}|^{\sigma} u_{l}$ for different values of $\sigma$.
Flach, S., Skokos, Ch.
core   +1 more source

Study of Optical Solitons and Quasi-Periodic Behaviour for the Fractional Cubic Quintic Nonlinear Pulse Propagation Model

Mathematics
This study explores analytical soliton solutions for the cubic–quintic time-fractional nonlinear non-paraxial pulse transmission model. This versatile model finds numerous uses in fiber optic communication, nonlinear optics, and optical signal processing.
Lotfi Jlali, Syed T. R. Rizvi, Sana Shabbir, Aly R. Seadawy   +3 more
doaj   +1 more source

Non-Linear Plasma Wave Dynamics: Investigating Chaos in Dynamical Systems

Mathematics
This work addresses the significant issue of plasma waves interacting with non-linear dynamical systems in both perturbed and unperturbed states, as modeled by the generalized Whitham–Broer–Kaup–Boussinesq–Kupershmidt (WBK-BK) Equations.
Raymond Ghandour, Abdullah S. Karar, Zaher Al Barakeh, Julien Moussa H. Barakat, Zia Ur Rehman   +4 more
doaj   +1 more source

Quantum Noise: Particles, Waves and Mixture

Applied Sciences
We carry out a theoretical investigation about quantum noise in coherent mixtures of states with different statistics. On the one hand, we investigate the dependence between the behavior wave-particle and associated noise.
Leonardo López-Hernández, Diego Alberto Lara-Bustillos, Guillermo de Jesús Rojas-Prado, Josué Cantera, Edna M. Hernández, Jehú López-Aparicio, Carlos Ernesto Vargas, Víctor Velázquez   +7 more
doaj   +1 more source

Examining Caregiver- and Family-Level Psychosocial Influences on Child Oral Health Behavioral Outcomes in Racially and Economically Minoritized Urban Families

Children
Objectives: Understanding the pathways linking caregiver- and family-level psychosocial factors and child oral health behaviors is critical for addressing oral health disparities. The current study examined the associations between caregiver psychosocial
Sally M. Weinstein, Helen H. Lee, John J. Dziak, Michael L. Berbaum, Tong Zhang, David Avenetti, Anna Sandoval, Molly A. Martin   +7 more
doaj   +1 more source

Dynamics of soliton solutions, bifurcation, chaotic behavior, stability, and sensitivity analysis of the time-fractional Gardner equation

AIP Advances
In the present article, we investigate the stability, chaos, and bifurcation analysis of an eminent nonlinear evolution equation, namely, the time-fractional Gardner equation, which is a hybrid model that includes properties of both the Korteweg–de Vries
Md. Antajul Islam, Nasrin Nahar Rimu, Shuvo Sarker, Pinakee Dey, M. Ali Akbar   +4 more
doaj   +1 more source

Chaos driven by kinetic Alfven waves

Geophysical Research Letters, 1991
We present a simple model describing the effect of a kinetic Alfvén wave on the motion of a test electron along a closed magnetic field line. We show that the electron motion can be strongly chaotic for a wide range of conditions. The chaos exhibits a broad‐band power spectrum in the frequency domain, although only three principal frequencies are ...
openaire   +1 more source

Chaos in Spin-Wave Instabilities [PDF]

Progress of Theoretical Physics Supplement, 1989
Hitoshi Yamazaki, Michinobu Mino
openaire   +1 more source

Analysing nonlinear oscillation and chaos using fundamental-wave balance principle

Tongxin xuebao, 2008
The fundamental-wave current Is1 can be found by the theory of fundamental harmonic balance. Its flow direc- tion represents profit and loss of active and reactive power in order to maintain self-oscillation, when the exciting source applied to the ...
HUANG Bing-hua, HUANG Xin-min, WEI Shan-ge   +2 more
doaj