Exact variational dynamics of the multimode Bose-Hubbard model based on SU(M) coherent states

11 Feb 2021 Yulong Qiao Frank Grossmann

We propose a variational approach to the dynamics of the Bose-Hubbard model beyond the mean field approximation. To develop a numerical scheme, we use a discrete overcomplete set of Glauber coherent states and its connection to the generalized coherent states studied in depth by Perelomov [A. Perelomov, Generalized Coherent States and Their Applications, Springer-Verlag (Berlin, 1986)]... (read more)

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