# American Institute of Mathematical Sciences

July  2011, 10(4): 1121-1128. doi: 10.3934/cpaa.2011.10.1121

## Remarks on some dispersive estimates

 1 Department of Mathematics, and Institute of Pure and Applied Mathematics, Chonbuk National University, Jeonju 561-756, South Korea 2 Department of Applied Physics, Waseda University, Tokyo, 169-8555 3 School of Mathematics and System Sciences, Beihang University, Beijing 100191, China

Received  March 2010 Revised  October 2010 Published  April 2011

In this paper we consider the initial value problem for $i\partial_t u + \omega(|\nabla|) u = 0$. Under suitable smoothness and growth conditions on $\omega$, we derive dispersive estimates which is the generalization of time decay and Strichartz estimates. We unify and also simplify dispersive estimates by utilizing the Bessel function. Another main ingredient of this paper is to revisit oscillatory integrals of [2].
Citation: Yonggeun Cho, Tohru Ozawa, Suxia Xia. Remarks on some dispersive estimates. Communications on Pure & Applied Analysis, 2011, 10 (4) : 1121-1128. doi: 10.3934/cpaa.2011.10.1121
##### References:
 [1] J. Bergh and J. Löfström, "Interpolation Spaces," Springer-Verlag, New York, 1976.  Google Scholar [2] Y. Cho and T. Ozawa, On small amplitude solutions to the generalized Boussinesq equations, Disctrete Cont. Dynam. Syst., 17 (2007), 691-711. doi: 10.3934/dcds.2007.17.691.  Google Scholar [3] S. Gustafson, K. Nakanishi and T.-P. Tsai, Scattering for the Gross-Pitaevskii equation, Math. Research Letters, 13 (2006), 273-285. doi: 10.1142/S0219199709003491.  Google Scholar [4] M. Keel and T. Tao, Endpoint Strichartz estimates, Amer. J. Math. 120 (1998), 955-980. doi: 10.1353/ajm.1998.0039.  Google Scholar [5] E. M. Stein, "Harmonic Analysis: Real-Variable Methods, Orthogonality, and Oscillatory Integrals," Princeton Univ. Press, Princeton, N.J., 1993.  Google Scholar

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##### References:
 [1] J. Bergh and J. Löfström, "Interpolation Spaces," Springer-Verlag, New York, 1976.  Google Scholar [2] Y. Cho and T. Ozawa, On small amplitude solutions to the generalized Boussinesq equations, Disctrete Cont. Dynam. Syst., 17 (2007), 691-711. doi: 10.3934/dcds.2007.17.691.  Google Scholar [3] S. Gustafson, K. Nakanishi and T.-P. Tsai, Scattering for the Gross-Pitaevskii equation, Math. Research Letters, 13 (2006), 273-285. doi: 10.1142/S0219199709003491.  Google Scholar [4] M. Keel and T. Tao, Endpoint Strichartz estimates, Amer. J. Math. 120 (1998), 955-980. doi: 10.1353/ajm.1998.0039.  Google Scholar [5] E. M. Stein, "Harmonic Analysis: Real-Variable Methods, Orthogonality, and Oscillatory Integrals," Princeton Univ. Press, Princeton, N.J., 1993.  Google Scholar
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