Tuesday, October 9, 2012

1210.2322 (Takashi Kimura)

Strong-coupling expansion for the spin-1 Bose-Hubbard model    [PDF]

Takashi Kimura
We perform a strong-coupling expansion up to the third order of the hopping parameter $t$ for the spin-1 Bose-Hubbard model with antiferromagnetic interaction. We examine the validity of the expansion by comparing it with the mean-field theory. Moreover, we apply a few extrapolation methods up to the infinite order of $t$ to improve our results.
View original: http://arxiv.org/abs/1210.2322

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