Results 41 to 50 of about 18,489 (341)

Self-organized escape processes of linear chains in nonlinear potentials

open access: yes, 2014
An enhancement of localized nonlinear modes in coupled systems gives rise to a novel type of escape process. We study a spatially one dimensional set-up consisting of a linearly coupled oscillator chain of $N$ mass-points situated in a metastable ...
Gross, Torsten   +2 more
core   +1 more source

The phase plane of moving discrete breathers

open access: yes, 1997
We study anharmonic localization in a periodic five atom chain with quadratic-quartic spring potential. We use discrete symmetries to eliminate the degeneracies of the harmonic chain and easily find periodic orbits.
A. J. Lichtenberg   +11 more
core   +3 more sources

Discrete Breathers in a Nonlinear Polarizability Model of Ferroelectrics

open access: yes, 2011
We present a family of discrete breathers, which exists in a nonlinear polarizability model of ferroelectric materials. The core-shell model is set up in its non-dimensionalized Hamiltonian form and its linear spectrum is examined.
Bishop, A. R.   +3 more
core   +1 more source

Growth and mouth breathers

open access: yesJornal de Pediatria, 2019
To assess the relationship between mouth breathing and growth disorders among children and teenagers.Search on MEDLINE database, over the last 10 years, by using the following terms: "mouth breathing", "adenotonsilar hypertrophy", "allergic rhinitis", "sleep disturbance" AND "growth impairment", "growth hormone", "failure to thrive", "short stature ...
Mario Morais‐Almeida   +2 more
openaire   +7 more sources

Hamiltonian dynamics of breathers with third-order dispersion [PDF]

open access: yes, 2001
We present a nonperturbative analysis of certain dynamical aspects of breathers (dispersion-managed solitons) including the effects of third-order dispersion.
Mookherjea, Shayan, Yariv, Amnon
core   +1 more source

Multi-site breathers in Klein-Gordon lattices: stability, resonances, and bifurcations

open access: yes, 2013
We prove the most general theorem about spectral stability of multi-site breathers in the discrete Klein-Gordon equation with a small coupling constant.
Anton Sakovich   +11 more
core   +1 more source

Walk-off-induced dissipative breathers and dissipative breather gas in microresonators

open access: yesPhysical Review A, 2023
Dissipative solitons in optical microcavities have attracted significant attention in recent years due to their direct association with the generation of optical frequency combs. Here, we address the problem of dissipative soliton breathers in a microresonator with second-order nonlinearity, operating at the exact phase-matching for efficient second ...
A. Villois   +3 more
openaire   +3 more sources

Pulmonary Dysfunction Is Associated With Sleep Study Abnormalities in Children With Sickle Cell Disease: A Multicenter Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Pulmonary dysfunction and sleep abnormalities are common in children with sickle cell disease (SCD) and are associated with worse clinical outcomes. Whether spirometry abnormalities are associated with polysomnography (PSG) findings remains unclear.
Ammar Saadoon Alishlash   +4 more
wiley   +1 more source

Breathers and kinks in a simulated crystal experiment [PDF]

open access: yes, 2010
We develop a simple 1D model for the scattering of an incoming particle hitting the surface of mica crystal, the transmission of energy through the crystal by a localized mode, and the ejection of atom(s) at the incident or distant face.
Cuevas, J.   +3 more
core   +2 more sources

Magnetoinductive breathers in metamaterials [PDF]

open access: yesPhysical Review E, 2008
The existence and stability of discrete breathers (DBs) in one- and two-dimensional magnetic metamaterials (MMs), which consist of periodic arrangements (arrays) of split-ring resonators (SRRs), are investigated numerically. We consider different configurations of the SRR arrays, which are related to the relative orientation of the SRRs in the MM, in ...
M, Eleftheriou   +2 more
openaire   +2 more sources

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