Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8162359 | Physica B: Condensed Matter | 2014 | 11 Pages |
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
Authors
Kai Ji, Stefan Maier, Andreas Komnik,