Thermal effects in light scattering from ultracold bosons in an optical lattice

Details Thermal effects in light scattering from ultracold bosons in an optical lattice Thermal effects in light scattering from ultracold bosons in an optical lattice

2009-04-19

arxiv.org/abs/0904.2927v3

Phys. Rev. A 80, 043404 (2009)

Physics

Condensed Matter

Quantum Gases

14 pages, 12 figures

Scientific paper

10.1103/PhysRevA.80.043404

We study the scattering of a weak and far-detuned light from a system of ultracold bosons in 1D and 3D optical lattices. We show the connection between angular distributions of the scattered light and statistical properties of a Bose gas in a periodic potential. The angular patterns are determined by the Fourier transform of the second-order correlation function, and thus they can be used to retrieve information on particle number fluctuations and correlations. We consider superfluid and Mott insulator phases of the Bose gas in a lattice, and we analyze in detail how the scattering depends on the system dimensionality, temperature and atom-atom interactions.

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