| Dynamic structure factor of a Bose-Hubbard gas |
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| 作者单位： | SHAO TingLi Department of Mathematics and Physics，Shenyang Institute of Chemical Technology，Shenyang 110142，China |
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| 摘 要： | The dynamic structure factor of a Bose-Einstein condensate in an optical lattice, momentum and energy rates imparted to the condensate are analyzed in detail as the function of both the lattice depth and the strength of the two-body interaction. Our investigation shows that the lattice depth strongly affects the dynamic structure factor. An oscillating behavior of both the static structure factor and excitation strength as a function of the momentum transfer has been developed. We also show how interatomic interaction affects these processes and discuss the conditions for possible experimental realization.
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| 关 键 词： | Bose-Einstein冷凝物 动态结构 气体 光学晶格 |
| 收稿时间： | 2008-01-23 |
| 修稿时间： | 2008-04-09 |
Dynamic structure factor of a Bose-Hubbard gas |
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| Authors: | TingLi Shao |
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| Institution: | (1) Department of Mathematics and Physics, Shenyang Institute of Chemical Technology, Shenyang, 110142, China |
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| Abstract: | The dynamic structure factor of a Bose-Einstein condensate in an optical lattice, momentum and en- ergy rates imparted to the condensate are analyzed in detail as the function of both the lattice depth and the strength of the two-body interaction. Our investigation shows that the lattice depth strongly affects the dynamic structure factor. An oscillating behavior of both the static structure factor and ex- citation strength as a function of the momentum transfer has been developed. We also show how in- teratomic interaction affects these processes and discuss the conditions for possible experimental realization. |
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| Keywords: | Bose-Einstein condensate optical lattice superfluid |
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