Flow equations for Hamiltonians
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If you have a question about this talk, please contact Mustapha Amrani.
Mathematics and Physics of Anderson localization: 50 Years After
This is a method to diagonalize or block-diagonalize a Hamiltonian by a
continuous unitary transformation.
After an introduction into the method a short survey of applications are
given.
As an example the elimination of the electron-phonon interaction in
second order in the coupling is performed.
Then a gradient-procedure which minimizes a cost-function is shown.
A procedure to bring the Hubbard Hamiltonian to molecular-field form is
given as a second example.
Original paper:
FW, Annalen der Physik (Leipzig) 3 (1994) 77
This talk is part of the Isaac Newton Institute Seminar Series series.
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