Results 51 to 60 of about 3,303,855 (320)
Standing and travelling waves in cylindrical Rayleigh-Benard convection
, 2007 The Boussinesq equations for Rayleigh-Benard convection are simulated for a cylindrical container with an aspect ratio near 1.5. The transition from an axisymmetric stationary flow to time-dependent flows is studied using nonlinear simulations, linear ...
Boronska, Katarzyna +1 more
core +1 more source
Existence and Stability of Standing Waves for Supercritical NLS with a Partial Confinement [PDF]
Communications in Mathematical Physics, 2016 We prove the existence of orbitally stable ground states to NLS with a partial confinement together with qualitative and symmetry properties. This result is obtained for nonlinearities which are L2-supercritical; in particular, we cover the physically ...
J. Bellazzini +3 more
semanticscholar +1 more source
Primordial standing waves [PDF]
Physical Review D, 2018 We consider the possibility that the primordial fluctuations (scalar and tensor) might have been standing waves at their moment of creation, whether or not they had a quantum origin. We lay down the general conditions for spatial translational invariance, and isolate the pieces of the most general such theory that comply with, or break translational ...
Gubitosi G., Magueijo J.
openaire +7 more sources
Travelling and standing waves in magnetoconvection [PDF]
, 1993 The problem of Boussinesq magnetoconvection with periodic boundary conditions is studied using standard perturbation techniques. It is fbund that either travelling waves or standing waves can be stable at the onset of oscillatory convection, depending
Matthews, P.C., Rucklidge, A.M.
core +1 more source
ProceedingsHeat spots caused by standing waves in an inspected object can pose practical challenges in nondestructive inspection using ultrasonic excitation thermography.
Masashi Ishikawa +3 more
doaj +1 more source
Orbital stability of standing waves for supercritical NLS with potential on graphs
, 2018 In this paper we study the existence and stability of normalized standing waves for the nonlinear Schr\"odinger equation on a general starlike graph with potentials.
Ardila, Alex H.
core +1 more source
Standing-wave interferometer [PDF]
Applied Physics Letters, 2003 An interferometric position sensor was developed using the concept of sampling a standing wave. Interference of a standing wave created in front of a plane mirror can be detected by thin, partly transparent sensors based on amorphous silicon. The optical thickness of the absorption layer is thinner than the wavelength λ of the incident light. Detection
Stiebig, H. +5 more
openaire +2 more sources
Strong instability of standing waves for nonlinear Schr\"odinger equations with harmonic potential [PDF]
, 2016 We study strong instability of standing waves $e^{i\omega t} \phi_{\omega}(x)$ for nonlinear Schr\"odinger equations with $L^2$-supercritical nonlinearity and a harmonic potential, where $\phi_{\omega}$ is a ground state of the corresponding stationary ...
Masahito Ohta
semanticscholar +1 more source
Quasi-Periodic Standing Wave Solutions of Gravity-Capillary Water Waves [PDF]
Memoirs of the American Mathematical Society, 2016 We prove the existence and the linear stability of small amplitude time {\it quasi-periodic} standing wave solutions (i.e. periodic and even in the space variable $ x $) of a $ 2 $-dimensional ocean with infinite depth under the action of gravity and ...
M. Berti, Riccardo Montalto
semanticscholar +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source