Concentration in Lotka-Volterra parabolic or integral equations: a general convergence result

G Barles, S Mirrahimi, B Perthame - 2009 - projecteuclid.org
We study two equations of Lotka-Volterra type that describe the Darwinian evolution of a
population density. In the first model a Laplace term represents the mutations. In the second …

The scaling limit of the KPZ equation in space dimension 3 and higher

J Magnen, J Unterberger - Journal of Statistical Physics, 2018 - Springer
We study in the present article the Kardar–Parisi–Zhang (KPZ) equation ∂ _t h (t, x)= ν Δ h
(t, x)+ λ| ∇ h (t, x)|^ 2+ D\, η (t, x),\qquad (t, x) ∈ R _+ * R^ d∂ th (t, x)= ν Δ h (t, x)+ λ|∇ h (t …

Clamping and Synchronization in the Strongly Coupled FitzHugh--Nagumo Model

C Quininao, JD Touboul - SIAM journal on applied dynamical systems, 2020 - SIAM
We investigate the dynamics of a limit of interacting FitzHugh--Nagumo neurons in the
regime of large interaction coefficients. We consider the dynamics described by a mean-field …

Stability of hypercontractivity, the logarithmic Sobolev inequality, and Talagrand's cost inequality

N Bez, S Nakamura, H Tsuji - Journal of Functional Analysis, 2023 - Elsevier
We provide deficit estimates for Nelson's hypercontractivity inequality, the logarithmic
Sobolev inequality, and Talagrand's transportation cost inequality under the restriction that …

Quantitative and qualitative properties for Hamilton-Jacobi PDEs via the nonlinear adjoint method

F Camilli, A Goffi, C Mendico - arXiv preprint arXiv:2307.12932, 2023 - arxiv.org
We provide some new integral estimates for solutions to Hamilton-Jacobi equations and we
discuss several consequences, ranging from $ L^ p $-rates of convergence for the vanishing …

L∞ estimates and uniqueness results for nonlinear parabolic equations with gradient absorption terms

MF Bidaut-Véron, NA Dao - Nonlinear Analysis: Theory, Methods & …, 2013 - Elsevier
We study the nonnegative solutions of the viscous Hamilton–Jacobi problem {ut− ν Δ u+|∇
u| q= 0, u (0)= u 0, in Q Ω, T= Ω×(0, T), where q> 1, ν≧ 0, T∈(0,∞], and Ω= RN or Ω is a …

Isolated initial singularities for the viscous Hamilton-Jacobi equation

MF Bidaut-Veron, NA Dao - 2012 - projecteuclid.org
Here we study the nonnegative solutions of the viscous Hamilton--Jacobi equation u_ t-Δ u+|
∇ u|^ q= 0 in Q_Ω,T=Ω*\left(0,T\right), where q>1, T∈\left(0,∞\right, and Ω is a smooth …

[PDF][PDF] Viscous conservation laws in 1D with measure initial data

M Bank, M Ben-Artzi, ME Schonbek - arXiv preprint arXiv:1907.02807, 2019 - arxiv.org
The one-dimensional viscous conservation law is considered on the whole line $$ u_t+ f (u)
_x=\eps u_ {xx},\quad (x, t)\in\RR\times\overline {\RP},\quad\eps> 0, $$ subject to positive …

Generalized PDE estimates for KPZ equations through Hamilton-Jacobi-Bellman formalism

J Unterberger - arXiv preprint arXiv:1312.5293, 2013 - arxiv.org
We study in this series of articles the Kardar-Parisi-Zhang (KPZ) equation $$\partial_t h (t,
x)=\nu\Delta h (t, x)+\lambda V (|\nabla h (t, x)|)+\sqrt {D}\,\eta (t, x),\qquad x\in {\mathbb {R}} …

Initial trace of solutions of Hamilton-Jacobi parabolic equation with absorption

MF Bidaut-Véron, NA Dao - Advanced Nonlinear Studies, 2015 - degruyter.com
In this article we study the initial trace problem for the nonnegative solutions of equation ut−
Δu+|∇ u| q= 0 in QΩ, T= Ω×(0, T), where q> 0, and Ω= ℝN, or Ω is a bounded domain of ℝN …