Doublon Relaxation in the Bose-Hubbard Model

AL Chudnovskiy, Dimitri Gangardt, A Kamenev

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


The decay of a high-energy double occupancy state, doublon, in a narrow-band lattice requires the creation of a coherent many-particle excitation. This leads to an exponentially long relaxation time of such a state. We show that, if the average occupation number is sufficiently small, the corresponding exponent may be evaluated exactly. To this end we develop the quasiclassical approach to calculation of the high-order tree-level decay amplitudes.
Original languageEnglish
Pages (from-to)085302
Number of pages1
JournalPhysical Review Letters
Issue number8
Publication statusPublished - 1 Feb 2012


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