{ "id": "1802.08133", "version": "v1", "published": "2018-02-16T03:11:05.000Z", "updated": "2018-02-16T03:11:05.000Z", "title": "Reducibility for wave equations of finitely smooth potential with periodic boundary conditions", "authors": [ "Jing Li", "Yingte Sun", "Bing Xie" ], "comment": "arXiv admin note: text overlap with arXiv:1706.06713", "categories": [ "math.DS" ], "abstract": "In the present paper, the reducibility is derived for the wave equations with finitely smooth and time-quasi-periodic potential subjects to periodic boundary conditions. More exactly, the linear wave equation $u_{tt}-u_{xx}+Mu+\\varepsilon (V_0(\\omega t)u_{xx}+V(\\omega t, x)u)=0,\\;x\\in \\mathbb{R}/2\\pi \\mathbb{Z}$ can be reduced to a linear Hamiltonian system of a constant coefficient operator which is of pure imaginary point spectrum set, where $V$ is finitely smooth in $(t, x)$, quasi-periodic in time $t$ with Diophantine frequency $\\omega\\in \\mathbb{R}^{n},$ and $V_0$ is finitely smooth and quasi-periodic in time $t$ with Diophantine frequency $\\omega\\in \\mathbb{R}^{n},$ Moreover, it is proved that the corresponding wave operator possesses the property of pure point spectra and zero Lyapunov exponent.", "revisions": [ { "version": "v1", "updated": "2018-02-16T03:11:05.000Z" } ], "analyses": { "keywords": [ "periodic boundary conditions", "wave equation", "finitely smooth potential", "pure imaginary point spectrum set", "reducibility" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }