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Existence of groundstates for a class of nonlinear Choquard equations

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TLDR
In this article, the authors prove the existence of a nontrivial solution to the nonlinear Choquard equation in ℝ^N, where I_α is a Riesz potential.
Abstract
We prove the existence of a nontrivial solution 𝑢 ∈ H¹ (ℝ^N) to the nonlinear Choquard equation -Δ 𝑢 + 𝑢 = (I_α * 𝐹 (𝑢)) 𝐹' (𝑢) in ℝ^N, where I_α is a Riesz potential, under almost necessary conditions on the nonlinearity 𝐹 in the spirit of Berestycki and Lions. This solution is a groundstate; if moreover 𝐹 is even and monotone on (0, ∞), then 𝑢 is of constant sign and radially symmetric.

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Journal ArticleDOI

Groundstates of nonlinear Choquard equations: existence, qualitative properties and decay asymptotics

TL;DR: In this paper, the authors considered a semilinear elliptic problem and proved the existence of a positive groundstate solution of the Choquard or nonlinear Schr\"odinger--Newton equation for an optimal range of parameters.
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A guide to the Choquard equation

TL;DR: A survey of the existence and properties of solutions to the Choquard type equations can be found in this paper, where some variants and extensions of its variants can also be found.
Journal ArticleDOI

The Brezis-Nirenberg type critical problem for the nonlinear Choquard equation

TL;DR: In this paper, the Brezis-Nirenberg type problem of the nonlinear Choquard equation was studied and existence results for the problem were established for the case where Ω is a bounded domain of R with Lipschitz boundary.
Journal ArticleDOI

Nodal solutions for the Choquard equation

TL;DR: In this paper, the general Choquard equation is considered and minimal action odd solutions for p ∈ (N + α N, N + α n − 2 ) and minimal-action nodal solutions for n ∈ 2, N+α N − 2, N+ α N−2 ) are presented.
Journal ArticleDOI

A guide to the Choquard equation

TL;DR: A survey of the existence and properties of solutions to the Choquard type equations can be found in this article, where some variants and extensions of its variants can also be found.
References
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Book

Functional Analysis, Sobolev Spaces and Partial Differential Equations

Haim Brezis
TL;DR: In this article, the theory of conjugate convex functions is introduced, and the Hahn-Banach Theorem and the closed graph theorem are discussed, as well as the variations of boundary value problems in one dimension.
Book

Minimax Theorems

Michel Willem
Journal ArticleDOI

Nonlinear scalar field equations, I existence of a ground state

TL;DR: In this article, a constrained minimization method was proposed for the case of dimension N = 1 (Necessary and sufficient conditions) for the zero mass case, where N is the number of dimensions in the dimension N.
Journal ArticleDOI

The concentration-compactness principle in the calculus of variations. The locally compact case, part 1

TL;DR: In this paper, the equivalence between the compactness of all minimizing sequences and some strict sub-additivity conditions was shown based on a compactness lemma obtained with the help of the notion of concentration function of a measure.
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