Bragg spectroscopy of trapped one dimensional strongly interacting bosons in optical lattices: Probing the cake-structure
arXiv:cond-mat/0602240 · doi:10.1103/PhysRevA.74.013601
Abstract
We study Bragg spectroscopy of strongly interacting one dimensional bosons loaded in an optical lattice plus an additional parabolic potential. We calculate the dynamic structure factor by using Monte Carlo simulations for the Bose-Hubbard Hamiltonian, exact diagonalizations and the results of a recently introduced effective fermionization (EF) model. We find that, due to the system's inhomogeneity, the excitation spectrum exhibits a multi-branched structure, whose origin is related to the presence of superfluid regions with different densities in the atomic distribution. We thus suggest that Bragg spectroscopy in the linear regime can be used as an experimental tool to unveil the shell structure of alternating Mott insulator and superfluid phases characteristic of trapped bosons.
arXiv comment7 pages, 4 figures
References in corpus (16)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Cold bosonic atoms in optical lattices
- Transition from a strongly interacting 1D superfluid to a Mott insulator
- Exciting Collective Oscillations in a Trapped 1D Gas
- Mott Domains of Bosons Confined on Optical Lattices
- Strongly inhibited transport of a 1D Bose gas in a lattice
- Phase coherence of an atomic Mott insulator
- Revealing Superfluid--Mott-Insulator Transition in an Optical Lattice
- Interference pattern and visibility of a Mott insulator
- Bragg Spectroscopy of ultracold atoms loaded in an optical lattice
- Structure and stability of Mott-insulator shells of bosons trapped in an optical lattice
- Inelastic light scattering from a Mott insulator
- Dynamic response of trapped ultracold bosons on optical lattices
- Phase coherence, visibility, and the superfluid--Mott-insulator transition on one-dimensional optical lattices
- Effects of Inhomogeneity on the Spectrum of the Mott-Insulator State
- One-dimensional non-interacting fermions in harmonic confinement: equilibrium and dynamical properties
Cited by in corpus (23)
- Many-Body Physics with Ultracold Gases
- Momentum-Resolved Bragg Spectroscopy in Optical Lattices
- Exploring correlated 1D Bose gases from the superfluid to the Mott-insulator state by inelastic light scattering
- Detecting the Amplitude Mode of Strongly Interacting Lattice Bosons by Bragg Scattering
- Ultracold bosons with short-range interaction in regular optical lattices
- Modulation spectroscopy with ultracold fermions in an optical lattice
- Characterization of Mott-insulating and superfluid phases in the one-dimensional Bose--Hubbard model
- Spectroscopy for cold atom gases in periodically phase-modulated optical lattices
- Excitation dynamics in a lattice Bose gas within the time-dependent Gutzwiller mean-field approach
- Interacting bosons in an optical lattice
- Ultracold bosons in lattices with binary disorder
- Bragg spectroscopy of clean and disordered lattice bosons in one dimension: a spectral fingerprint of the Bose glass
- Multi-band spectroscopy of inhomogeneous Mott-insulator states of ultracold bosons
- A variational method based on weighted graph states
- Probing condensate order in deep optical lattices
- Raman Spectroscopy of Mott insulator states in optical lattices
- Probing the Superfluid - Mott Insulating Shell Structure of Cold Atoms by Parametric Excitations
- Interacting bosons in an optical lattice: Bose-Einstein condensates and Mott insulator
- Lattice bosons in quartic confinement
- Light scattering in inhomogeneous Tomonaga-Luttinger liquids
- Accessing finite momentum excitations of the one-dimensional Bose-Hubbard model using superlattice modulation spectroscopy
- Bragg spectroscopy of a cigar shaped Bose condensate in optical lattices
- The Bose-Hubbard polaron from weak to strong coupling