Results 21 to 30 of about 1,014,825 (185)

Normalized solutions for pseudo-relativistic Schrödinger equations

open access: yesCommunications in Analysis and Mechanics
In this paper, we consider the existence and multiplicity of normalized solutions to the following pseudo-relativistic Schrödinger equations $ \begin{equation*} \left\{ \begin{array}{lll} \sqrt{-\Delta+m^2}u +\lambda u = \vartheta |u|^{p-2}v +|u|^{2 ...
Xueqi Sun, Yongqiang Fu, Sihua Liang
doaj   +1 more source

The existence and multiplicity of the normalized solutions for fractional Schrödinger equations involving Sobolev critical exponent in the L2-subcritical and L2-supercritical cases

open access: yesAdvances in Nonlinear Analysis, 2022
This paper is devoted to investigate the existence and multiplicity of the normalized solutions for the following fractional Schrödinger equation: (P)(−Δ)su+λu=μ∣u∣p−2u+∣u∣2s∗−2u,x∈RN,u>0,∫RN∣u∣2dx=a2,\left\{\begin{array}{l}{\left(-\Delta )}^{s}u+\lambda
Li Quanqing, Zou Wenming
doaj   +1 more source

Normalized multi-bump solutions for saturable Schrödinger equations

open access: yesAdvances in Nonlinear Analysis, 2019
In this paper, we are concerned with the existence of multi-bump solutions for a class of semiclassical saturable Schrödinger equations with an density function:
Wang Xiaoming, Wang Zhi-Qiang
doaj   +1 more source

The Chern-Ricci flow on complex surfaces [PDF]

open access: yes, 2012
The Chern-Ricci flow is an evolution equation of Hermitian metrics by their Chern-Ricci form, first introduced by Gill. Building on our previous work, we investigate this flow on complex surfaces. We establish new estimates in the case of finite time non-
Ben Weinkove   +15 more
core   +1 more source

Univalence of normalized solutions of W″(z)+p(z)W(z)=0

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1982
Denote solutions of W″(z)+p(z)W(z)=0 by Wα(z)=zα[1+∑n=1∞anzn] and Wβ(z)=zβ[1+∑n=1∞bnzn], where ...
R. K. Brown
doaj   +1 more source

Normalized solutions of Kirchhoff equations with Hartree-type nonlinearity

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2023
In the present paper, we prove the existence of the solutions (λ, u) ∈ ℝ × H1(ℝ3) to the following Kirchhoff equations with the Hartree-type nonlinearity under the general mass supercritical settings, {-(a+b∫ℝ3|∇u|2dx)Δu-λu=[Iα*(K(x)F(u))]K(x)f(u),u∈H1 ...
Yuan Shuai, Gao Yuning
doaj   +1 more source

Quantum parametric resonance [PDF]

open access: yes, 2001
The quantum mechanical equivalent of parametric resonance is studied. A simple model of a periodically kicked harmonic oscillator is introduced which can be solved exactly.
Weigert, S.
core   +2 more sources

On Normalized Ricci Flow and Smooth Structures on Four-Manifolds with $b^+=1$

open access: yes, 2008
We find an obstruction to the existence of non-singular solutions to the normalized Ricci flow on four-manifolds with $b^+=1$. By using this obstruction, we study the relationship between the existence or non-existence of non-singular solutions of the ...
Ishida, Masashi   +2 more
core   +1 more source

Normalized solution for a kind of coupled Kirchhoff systems

open access: yesElectronic Research Archive
In this paper, we investigate the existence of a normalized solution for the following Kirchhoff system in the entire space $ \mathbb{R}^N $ ($ N\geq3 $): \begin{document}$ \begin{align*} \begin{cases}-\left(1+\int_{ \mathbb{R}^N}|\nabla u|^2dx\right)\
Shiyong Zhang, Qiongfen Zhang
doaj   +1 more source

Remarks on the spherical waves of the Dirac field on de Sitter spacetime

open access: yes, 2006
The Shishkin's solutions of the Dirac equation in spherical moving frames of the de Sitter spacetime are investigated pointing out the set of commuting operators whose eigenvalues determine the integration constants.
Abramowitz M.   +5 more
core   +1 more source

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