Nils Ackermann

activity

20122017

most citedUnstable normalized standing waves for the space periodic NLS

26 citations · 35 across the 3 of their papers we have counts for

collaborators

3 papers

math.AP2017★ 26 cited

Unstable normalized standing waves for the space periodic NLS

Nils Ackermann, Tobias Weth

For the stationary nonlinear Schrödinger equation $- Δ u + V (x) u - f (u) = λ u$ with periodic potential $V$ we study the existence and stability properties of multibump solutions with pr…

math.AP2015

Precise exponential decay for solutions of semilinear elliptic equations and its effect on the structure of the solution set for a real analytic nonlinearity

Nils Ackermann, Norman Dancer

We are concerned with the properties of weak solutions of the stationary Schrödinger equation $- Δ u + V u = f (u)$ , $u \in H^{1} (R^{N}) \cap L^{\infty} (R^{N})$ , where $V$ is H…

math.AP2012★ 9 cited

Alternating sign multibump solutions of nonlinear elliptic equations in expanding tubular domains

Nils Ackermann, Monica Clapp, Filomena Pacella

Let $Γ$ denote a smooth simple curve in $R^{N}$ , $N \geq 2$ , possibly with boundary. Let $Ω_{R}$ be the open normal tubular neighborhood of radius 1 of the expanded curve $R…