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Signatures of the superfluid to Mott-insulator transition in the excitation spectrum of ultracold atoms

Abstract:

We present a detailed analysis of the dynamical response of ultracold bosonic atoms in a one-dimensional optical lattice subjected to a periodic modulation of the lattice depth. Following the experimental realization by Stöferle et al (2004 Phys. Rev. Lett. 92 130403), we study the excitation spectrum of the system as revealed by the response of the total energy as a function of the modulation frequency Ω. By using the Time Evolving Block Decimation algorithm, we are able to simulate one-dime...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1088/1367-2630/8/8/160

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atmos Ocean & Planet Physics
Research group:
Dieter Jaksch Theory Group
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Research group:
Dieter Jaksch Theory Group
Oxford college:
Keble College
Role:
Author

Contributors

Publisher:
Institute of Physics Publishing Ltd. Publisher's website
Journal:
New Journal of Physics Journal website
Volume:
8
Issue:
8
Article number:
160
Publication date:
2006-08-01
DOI:
EISSN:
1367-2630
Language:
English
Keywords:
Subjects:
UUID:
uuid:66d749a7-b41c-439f-8e35-d17c63399641
Local pid:
ora:2491
Deposit date:
2009-01-09

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