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arxiv: 1205.0133 · v4 · pith:7THWNHQKnew · submitted 2012-05-01 · 🌀 gr-qc · cond-mat.quant-gas

The role of Causality in Tunable Fermi Gas Condensates

classification 🌀 gr-qc cond-mat.quant-gas
keywords condensatescreationfermispontaneousatomscausalitycoldcurved
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We develop a new formalism for the description of the condensates of cold Fermi atoms whose speed of sound can be tuned with the aid of a narrow Feshbach resonance. We use this to look for spontaneous phonon creation that mimics spontaneous particle creation in curved space-time in Friedmann-Robertson-Walker and other model universes.

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