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We study a nonlocal wave equation with logarithmic damping which is rather weak in the low frequency zone as compared with frequently studied strong damping case. We consider the Cauchy problem for this model in the whole space and we study…

Analysis of PDEs · Mathematics 2021-12-01 Ruy Coimbra Charao , Marcello D'Abbicco , Ryo Ikehata

We introduce a new model of the logarithmic type of wave-like equation with a nonlocal logarithmic damping mechanism, which is rather weakly effective as compared with frequently studied fractional damping cases. We consider the Cauchy…

Analysis of PDEs · Mathematics 2020-10-07 Alessandra Piske , Ruy Coimbra Charão , Ryo Ikehata

We consider wave equations with a special type of log-fractional damping. We study the Cauchy problem for this model in the whole space, and we obtain an asymptotic profile and optimal estimates of solutions as time goes to infinity in…

Analysis of PDEs · Mathematics 2022-10-06 Ruy Coimbra Charão , Ryo Ikehata

We introduce a new model of the logarithmic type of wave like plate equation with a nonlocal logarithmic damping mechanism. We consider the Cauchy problem for this new model in the whole space, and study the asymptotic profile and optimal…

Analysis of PDEs · Mathematics 2021-04-20 Ruy Coimbra Charao , Alessandra Piske , Ryo Ikehata

We prove local decay estimates for the wave equation in the asymptotically Euclidean setting. In even dimensions we go beyond the optimal decay by providing the large time asymptotic profile, given by a solution of the free wave equation.…

Analysis of PDEs · Mathematics 2025-01-29 Rayan Fahs , Julien Royer

In this paper, we introduce a logarithmic-type second-order model with a non-local logarithmic damping mechanism in $R^N$. We present a motivation with a spectral approach to consider the equation, we consider the Cauchy problem associated…

Analysis of PDEs · Mathematics 2025-05-12 Fábio L. Oliveira , Diego G. Santos , Maria J. M. Silva , Dennys J. C. Silva

We consider the Cauchy problem in R^n for some types of damped wave equations. We derive asymptotic profiles of solutions with weighted L^{1,1}(R^n) initial data by employing a simple method introduced by the first author. The obtained…

Analysis of PDEs · Mathematics 2018-08-15 Ryo Ikehata , Shin Iyota

We consider the Cauchy problem for plate equations with rotational inertia and frictional damping terms. We will derive asymptotic profiles of the solution in L^2-sense as time goes to infinity in the case when the initial data have high…

Analysis of PDEs · Mathematics 2019-05-13 Tomonori Fukushima , Ryo Ikehata , Hironori Michihisa

We consider the Cauchy problem in ${\bf R}^{n}$ for strongly damped wave equations. We derive asymptotic profiles of these solutions with weighted $L^{1,1}({\bf R}^{n})$ data by using a method introduced in [10].

Analysis of PDEs · Mathematics 2014-02-26 Ryo Ikehata

In this paper, we are interested in analyzing the asymptotic profiles of solutions to the Cauchy problem for linear structurally damped $\sigma$-evolution equations in $L^2$-sense. Depending on the parameters $\sigma$ and $\delta$ we would…

Analysis of PDEs · Mathematics 2019-08-23 Tuan Anh Dao

In this paper we obtain higher order asymptotic profilles of solutions to the Cauchy problem of the linear damped wave equation in $\textbf{R}^n$ \begin{equation*} u_{tt}-\Delta u+u_t=0, \qquad u(0,x)=u_0(x), \quad u_t(0,x)=u_1(x),…

Analysis of PDEs · Mathematics 2017-10-16 Hironori Michihisa

We study the Cauchy problem for the nonlinear damped wave equation and establish the large data local well-posedness and small data global well-posedness with slowly decaying initial data. We also prove that the asymptotic profile of the…

Analysis of PDEs · Mathematics 2019-03-14 Masahiro Ikeda , Takahisa Inui , Yuta Wakasugi

This paper is concerned with the Cauchy-Dirichlet problem for fast diffusion equations posed in bounded domains, where every energy solution vanishes in finite time and a suitably rescaled solution converges to an asymptotic profile.…

Analysis of PDEs · Mathematics 2023-12-05 Goro Akagi , Yasunori Maekawa

We consider a wave equation with a nonlocal logarithmic damping depending on a small parameter $\theta \in (0,1/2)$. This research is a counter part of that was initiated by Charao-D'Abbicco-Ikehata considered in [5] for the large parameter…

Analysis of PDEs · Mathematics 2021-09-27 Alessandra Piske , Ruy Coimbra Charão , Ryo Ikehata

In this article, we are interested in studying the Cauchy problems for nonlinear damped wave equations and their systems on a weighted graph. Our main purpose is two-fold, namely, under certain conditions for volume growth of a ball and the…

Analysis of PDEs · Mathematics 2025-09-19 Tuan Anh Dao , Anh Tuan Duong

In this paper, we study the Cauchy problem for a wave equation with general strong damping $-\mu(|D|)\Delta u_t$ motivated by [Tao, Anal. PDE (2009)] and [Ebert-Girardi-Reissig, Math. Ann. (2020)]. By employing energy methods in the Fourier…

Analysis of PDEs · Mathematics 2022-11-03 Wenhui Chen , Ryo Ikehata

We consider the Cauchy problem for wave equations with localized damping in ${\bf R}^{2}$. The damping is effective only near spatial infinity. We obtain fast energy decay estimate such that $O(t^{-2}\log t)$ as $t \to \infty$. Unlike the…

Analysis of PDEs · Mathematics 2025-09-18 Ryo Ikehata

In this paper, we obtain several asymptotic profiles of solutions to the Cauchy problem for structurally damped wave equations $\partial_{t}^{2} u - \Delta u + \nu (-\Delta)^{\sigma} \partial_{t} u=0$, where $\nu >0$ and $0< \sigma \le1$.…

Analysis of PDEs · Mathematics 2016-07-08 Ryo Ikehata , Hiroshi Takeda

In this paper, we study the large-time behavior of solutions to a class of partially dissipative linear hyperbolic systems with applications in velocity-jump processes in several dimensions. Given integers $n,d\ge 1$, let $\mathbf…

Analysis of PDEs · Mathematics 2017-08-01 Thinh Tien Nguyen

We consider the large time asymptotic behavior of the global solutions to the initial value problem for the nonlinear damped wave equation with slowly decaying initial data. When the initial data decay fast enough, it is known that the…

Analysis of PDEs · Mathematics 2025-04-03 Ikki Fukuda
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