T
Tohru Ozawa
Researcher at Waseda University
Publications - 315
Citations - 7221
Tohru Ozawa is an academic researcher from Waseda University. The author has contributed to research in topics: Nonlinear system & Sobolev space. The author has an hindex of 46, co-authored 300 publications receiving 6516 citations. Previous affiliations of Tohru Ozawa include Research Institute for Mathematical Sciences & Université Paris-Saclay.
Papers
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Long range scattering for nonlinear Schrödinger equations in one space dimension
TL;DR: In this paper, the authors considered the scattering problem for the nonlinear Schrodinger equation in 1+1 dimensions and showed that modified wave operators for (*) exist on a dense set of a neighborhood of zero in the Lebesgue spaceL2(R) or in the Sobolev spaceH1(R).
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On Critical Cases of Sobolev′s Inequalities
TL;DR: In this article, a new form of the Trudinger-type inequality, which shows an explicit dependence, is presented, and an alternative proof of the Brezis-Gallouet-Wainger inequality is given.
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On the derivative nonlinear Schro¨dinger equation
Nakao Hayashi,Tohru Ozawa +1 more
TL;DR: In this article, the Cauchy problem for the derivative nonlinear Schrodinger equation was studied in the weighted Sobolev space and in the Schwartz class, and it was shown that there is a unique global existence of solutions to this problem.
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Long range scattering for non-linear Schrödinger and Hartree equations in space dimension n≥2
J. Ginibre,Tohru Ozawa +1 more
TL;DR: In this article, the existence of modified wave operators in the L2 sense on a dense set of small and sufficiently regular asymptotic states was proved for the non-linear Schrodinger (NLS) equation with a power interaction with critical powerp=1+2/n in space dimensionsn=2 and 3.
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Nonrelativistic limit in the energy space for nonlinear Klein-Gordon equations
TL;DR: In this paper, the authors studied the nonrelativistic limit of the Cauchy problem for the nonlinear Klein-Gordon equation and proved that any finite energy solution converges to the corresponding Schrodinger equation in the energy space, after the infinite oscillation in time is removed.