Response functions and superfluid density in a weakly interacting Bose gas with non-quadratic dispersion
arXiv:cond-mat/0605494 · doi:10.1103/PhysRevB.74.155325
Abstract
Motivated by the experimental search for Bose condensation of quasiparticles in semiconductors, the response functions of a weakly interacting Bose gas, with isotropic but non-quadratic dispersion, are considered. Non-quadratic dispersion modifies the definition of particle current, and leads to modified sum rules for the current-current response function. The effect of these modifications on the Berezhinski-Kosterlitz-Thouless transition is discussed.
4 pages, 2 figures
References in corpus (5)
- Non-equilibrium quantum condensation in an incoherently pumped dissipative system
- Bose-Einstein Condensation of Magnons in Cs2CuCl4
- BCS-BEC crossover in a system of microcavity polaritons
- Polariton condensation with localised excitons and propagating photons
- Thermodynamics and Excitations of Condensed Polaritons in Disordered Microcavities
Cited by in corpus (5)
- Half-vortices in polariton condensates
- Collective coherence in planar semiconductor microcavities
- Bose glass and superfuid phases of cavity polaritons
- Spectrum and thermal fluctuations of a microcavity polariton Bose-Einstein condensate
- Phase diagram for condensation of microcavity polaritons: from theory to practice