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Updated: Aug 15, 2026

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
Published on: February 4, 2017
Dynamic projection on feshbach molecules: a probe of pairing and phase fluctuations
Ehud Altman1, Ashvin Vishwanath
1Physics Department, Harvard University, Cambridge, Massachusetts 02138, USA.
Abstract:
We describe and justify a simple model for the dynamics associated with rapid sweeps across a Feshbach resonance, from the atomic to the molecular side, in an ultracold Fermi system. The model allows us to relate the observed molecule momentum distribution to equilibrium properties of the initial state. In particular, the dependence of the total molecule number on the sweep rate is found to be a sensitive probe of pairing in the initial state, whether condensed or not. This can be used to establish the presence of a phase fluctuation induced "pseudogap" phase in these systems.
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