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Download e-book for iPad: Effective Evolution Equations from Quantum Dynamics by Niels Benedikter,Marcello Porta,Benjamin Schlein

By Niels Benedikter,Marcello Porta,Benjamin Schlein

those notes examine the time evolution of quantum structures, and specifically the rigorous derivation of powerful equations approximating the many-body Schrödinger dynamics in sure bodily fascinating regimes. the focal point is totally on the derivation of time-dependent powerful theories (non-equilibrium query) approximating many-body quantum dynamics. The e-book is split into seven sections, the 1st of which in short stories the most homes of many-body quantum platforms and their time evolution. part 2 introduces the mean-field regime for bosonic structures and explains how the many-body dynamics will be approximated during this restrict utilizing the Hartree equation. part three offers a mode, in accordance with using coherent states, for carefully proving the convergence in the direction of the Hartree dynamics, whereas the fluctuations round the Hartree equation are thought of in part four. part five specializes in a dialogue of a extra refined regime, within which the many-body evolution will be approximated via the nonlinear Gross-Pitaevskii equation. part 6 addresses fermionic platforms (characterized through antisymmetric wave functions); the following, the fermionic mean-field regime is of course associated with a semiclassical regime, and it truly is confirmed that the evolution of approximate Slater determinants could be approximated utilizing the nonlinear Hartree-Fock equation. In last, part 7 reexamines an analogous fermionic mean-field regime, yet with a spotlight on combined quasi-free preliminary information approximating thermal states at optimistic temperature.           

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Effective Evolution Equations from Quantum Dynamics (SpringerBriefs in Mathematical Physics) by Niels Benedikter,Marcello Porta,Benjamin Schlein

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