scholarly journals A remark on global solutions to random 3D vorticity equations for small initial data

2019 ◽  
Vol 24 (8) ◽  
pp. 4021-4030 ◽  
Author(s):  
Michael Röckner ◽  
◽  
Rongchan Zhu ◽  
Xiangchan Zhu ◽  
◽  
...  
Keyword(s):  
Initial Data ◽  
Global Solutions ◽  
Small Initial Data ◽  
Vorticity Equations

ASYMPTOTICALLY SELF-SIMILAR GLOBAL SOLUTIONS OF A DAMPED WAVE EQUATION

2007 ◽  
Vol 09 (02) ◽  
pp. 253-277 ◽  
Author(s):  
SEIFEDDINE SNOUSSI ◽  
SLIM TAYACHI
Keyword(s):  
Wave Equation ◽  
Initial Data ◽  
Global Solutions ◽  
The Self ◽  
Initial Condition ◽  
Damped Wave Equation ◽  
Small Initial Data ◽  
Additional Hypothesis ◽  
Self Similar ◽  
Similar Solutions

We study the existence and the asymptotic behavior of global solutions of the damped wave equation [Formula: see text] where a ∈ ℝ, α >1, t > 0, x ∈ ℝn, n = 1,2,3, with initial condition (u (0), ut (0)) = (φ,ψ). For α > 2 and α > 1+2 / n, we prove the existence of mild global solutions for small initial data with low regularity and which are not in L1(ℝn). Under the additional hypothesis, (2 < α < 5, when n = 3), we prove that some of these solutions are asymptotic to the self-similar solutions of the associated semi-linear heat equation [Formula: see text] with homogeneous slowly decreasing initial data behaving like c|x|-2 / (α-1) as |x|→ ∞.

scholarly journals On the Analyticity for the Generalized Quadratic Derivative Complex Ginzburg-Landau Equation

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Chunyan Huang
Keyword(s):  
Initial Data ◽  
Landau Equation ◽  
Global Solutions ◽  
Spatial Dimension ◽  
Modulation Spaces ◽  
Ginzburg Landau ◽  
Small Initial Data ◽  
Ginzburg Landau Equation ◽  
Rough Initial Data ◽  
Analytic Regularity

We study the analytic property of the (generalized) quadratic derivative Ginzburg-Landau equation(1/2⩽α⩽1)in any spatial dimensionn⩾1with rough initial data. For1/2<α⩽1, we prove the analyticity of local solutions to the (generalized) quadratic derivative Ginzburg-Landau equation with large rough initial data in modulation spacesMp,11-2α(1⩽p⩽∞). Forα=1/2, we obtain the analytic regularity of global solutions to the fractional quadratic derivative Ginzburg-Landau equation with small initial data inB˙∞,10(ℝn)∩M∞,10(ℝn). The strategy is to develop uniform and dyadic exponential decay estimates for the generalized Ginzburg-Landau semigroupe-a+it-Δαto overcome the derivative in the nonlinear term.

Asymptotically self-similar global solutions of a semilinear parabolic equation with a nonlinear gradient term

1999 ◽  
Vol 129 (6) ◽  
pp. 1291-1307 ◽  
Author(s):  
S. Snoussi ◽  
S. Tayachi ◽  
F. B. Weissler
Keyword(s):  
Parabolic Equation ◽  
Initial Data ◽  
Asymptotic Behaviour ◽  
Global Solutions ◽  
Gradient Term ◽  
Semilinear Parabolic Equation ◽  
Small Initial Data ◽  
Self Similar ◽  
Semilinear Parabolic

We study the existence and the asymptotic behaviour of global solutions of the semilinear parabolic equation u(0) = ϧwhere a, b ∈ℝ, q > 1, p > 1. Forq=2p/(p+1) and ½ 1(p-1)>1 (equivalently, q > (n + 2)/(n + 1)), we prove the existence of mild global solutions for small initial data with respect to some norm. Some of those solutions are asymptotically self-similar.

scholarly journals Modified Scattering for the One-Dimensional Cubic NLS with a Repulsive Delta Potential

2018 ◽  
Vol 2019 (24) ◽  
pp. 7577-7603
Author(s):  
Satoshi Masaki ◽  
Jason Murphy ◽  
Jun-Ichi Segata
Keyword(s):  
Sobolev Space ◽  
Initial Data ◽  
Weighted Sobolev Space ◽  
Global Solutions ◽  
Initial Value ◽  
Small Initial Data ◽  
One Dimensional ◽  
Delta Potential ◽  
The One ◽  
Cubic Nonlinear Schrödinger Equation

Abstract We consider the initial-value problem for the one-dimensional cubic nonlinear Schrödinger equation with a repulsive delta potential. We prove that small initial data in a weighted Sobolev space lead to global solutions that decay in $L^{\infty }$ and exhibit modified scattering.

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