Abstract
Using inelastic scattering of light (Bragg spectroscopy), we study the low-energy excitations of strongly correlated phases of ultracold bosons on the cross-over from correlated 1D superfluids to Mott insulators. As it is commonly performed in solid-state physics, the use of such a probe allows us to extract important information about the atomic many-body state. In particular we show that we can extract information about the dynamical structure factor S(q,ω) and about the one-particle spectral function A(q,ω) from the Bragg spectra. This technique could be extended to study more exotic correlated phases of ultracold atoms.
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Clément, D., Fabbri, N., Fallani, L. et al. Bragg Spectroscopy of Strongly Correlated Bosons in Optical Lattices. J Low Temp Phys 158, 5–15 (2010). https://doi.org/10.1007/s10909-009-0040-7
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DOI: https://doi.org/10.1007/s10909-009-0040-7