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101 0 $aeng
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181   $ctxt$2rdacontent
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200 10$aInvariant Manifolds and Dispersive Hamiltonian Evolution Equations$b[electronic resource] /$fKenji Nakanishi, Wilhelm Schlag
210 3 $aZuerich, Switzerland $cEuropean Mathematical Society Publishing House$d2011
215   $a1 online resource (258 pages)
225 0 $aZurich Lectures in Advanced Mathematics (ZLAM)
330   $aThe notion of an invariant manifold arises naturally in the asymptotic stability analysis of stationary or standing wave solutions of unstable dispersive Hamiltonian evolution equations such as the focusing semilinear Klein-Gordon and Schro?dinger equations. This is due to the fact that the linearized operators about such special solutions typically exhibit negative eigenvalues (a single one for the ground state), which lead to exponential instability of the linearized flow and allows for ideas from hyperbolic dynamics to enter.  One of the main results proved here for energy subcritical equations is that the center-stable manifold associated with the ground state appears as a hyper-surface which separates a region of finite-time blowup in forward time from one which exhibits global existence and scattering to zero in forward time. Our entire analysis takes place in the energy topology, and the conserved energy can exceed the ground state energy only by a small amount.  This monograph is based on recent research by the authors and the proofs rely on an interplay between the variational structure of the ground states on the one hand, and the nonlinear hyperbolic dynamics near these states on the other hand. A key element in the proof is a virial-type argument excluding almost homoclinic orbits originating near the ground states, and returning to them, possibly after a long excursion.      These lectures are suitable for graduate students and researchers in partial differential equations and mathematical physics. For the cubic Klein-Gordon equation in three dimensions all details are provided, including the derivation of Strichartz estimates for the free equation and the concentration-compactness argument leading to scattering due to Kenig and Merle.
606   $aDifferential equations$2bicssc
606   $aPartial differential equations$2msc
615 07$aDifferential equations
615 07$aPartial differential equations
686   $a35-xx$2msc
700   $aNakanishi$b Kenji$01071340
702   $aSchlag$b Wilhelm
801  0$bch0018173
906   $aBOOK
912   $a9910151928703321
996   $aInvariant Manifolds and Dispersive Hamiltonian Evolution Equations$92566850
997   $aUNINA