Short-distance and short-time structure of a unitary Fermi gas

Details Short-distance and short-time structure of a unitary Fermi gas Short-distance and short-time structure of a unitary Fermi gas

2010-02-04

arxiv.org/abs/1002.0922v2

Phys.Rev. A81 (2010) 063634

Physics

Condensed Matter

Quantum Gases

11 pages, 8 figures

Scientific paper

10.1103/PhysRevA.81.063634

We consider the operator product expansions for unitarity fermions. We compute the dynamic structure factor S(q,w) at large frequency and wavenumber away from the one-particle peak. The overall normalization of S(q,w) is determined by Tan's contact parameter, and the dependence on q and w is obtained in closed analytic form. We also find energy deposited into the system by small, rapid variations of the inverse scattering length.

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