Article ID Journal Published Year Pages File Type
8162359 Physica B: Condensed Matter 2014 11 Pages PDF
Abstract
We analyze the dynamical response of a ultracold binary gas mixture in the presence of strong boson-fermion couplings. Mapping the problem onto that of the optical response of a metal/semiconductor electronic degrees of freedom to electromagnetic perturbation we calculate the corresponding dynamic linear response susceptibility in the non-perturbative regimes of strong boson-fermion coupling using diagrammatic resummation technique as well as quantum Monte Carlo simulations. We evaluate the Bragg spectral function as well as the optical conductivity and find a pseudogap, which forms in certain parameter regimes.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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