Global existence versus finite time blowup dichotomy for the system of nonlinear Schrödinger equations

초록

We construct an extremizer for the Lieb–Thirring energy inequality (except the endpoint cases) developing the concentration-compactness technique for operator valued inequality in the formulation of the profile decomposition. Moreover, we investigate the properties of the extremizer, such as the system of Euler–Lagrange equations, regularity and summability. As an application, we study a dynamical consequence of a system of nonlinear Schrödinger equations with focusing cubic nonlinearities in three dimension when each wave function is restricted to be orthogonal. Using the critical element of the Lieb–Thirring inequality, we establish a global existence versus finite time blowup dichotomy. This result extends the single particle result of Holmer–Roudenko [35] to infinitely many particles system. © 2018 Elsevier Masson SAS

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