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arxiv: 1109.3377 · v1 · pith:G4ZQ4DBAnew · submitted 2011-09-15 · ❄️ cond-mat.quant-gas

Amplitude and phase mode in a Bose Einstein condensate

classification ❄️ cond-mat.quant-gas
keywords bosemodeamplitudefreeannihilationappropriatebogoliubovcondensate
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We show that starting from the Heisenberg equations of motion for Bose annihilation and creation operators and using an appropriate transformation, we can split the Bogoliubov mode into a free particle mode and the amplitude mode. We show this for both the free Bose gas as well as the Bose gas in an optical lattice.

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