Antiferromagnetic noise correlations in optical lattices

نویسندگان

  • O. F. Syljuåsen
  • K. G. L. Pedersen
  • B. M. Andersen
  • E. Demler
  • G. M. Bruun
  • A. S. Sørensen
چکیده

G. M. Bruun, O. F. Syljuåsen, K. G. L. Pedersen, B. M. Andersen, E. Demler, and A. S. Sørensen Niels Bohr International Academy, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark Mathematical Physics, Lund Institute of Technology, P.O. Box 118, SE-22100 Lund, Sweden Department of Physics, University of Oslo, P.O. Box 1048, Blindern, N-0316 Oslo, Norway Niels Bohr Institute, University of Copenhagen, DK-2100 Copenhagen Ø, Denmark Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA !Received 3 July 2009; published 28 September 2009"

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Modulation spectroscopy and dynamics of double occupancies in a fermionic Mott insulator.

Observing antiferromagnetic correlations in ultracold fermions on optical lattices is an important step towards quantum simulation of the repulsive Hubbard model. We show that optical lattice modulation spectroscopy can be used to detect antiferromagnetic order and probe the nature of quasiparticle excitations in a fermionic Mott insulator. At high temperatures, the rate of creation of double o...

متن کامل

Designing Quantum Spin-Orbital Liquids in Artificial Mott Insulators

Quantum spin-orbital liquids are elusive strongly correlated states of matter that emerge from quantum frustration between spin and orbital degrees of freedom. A promising route towards the observation of those states is the creation of artificial Mott insulators where antiferromagnetic correlations between spins and orbitals can be designed. We show that Coulomb impurity lattices on the surfac...

متن کامل

Fermions in 2D optical lattices: temperature and entropy scales for observing antiferromagnetism and superfluidity.

One of the major challenges in realizing antiferromagnetic and superfluid phases in optical lattices is the ability to cool fermions. We determine constraints on the entropy for observing these phases in two-dimensional Hubbard models using determinantal quantum Monte Carlo simulations. We find that an entropy per particle approximately = ln2 is sufficient to observe the insulating gap in the r...

متن کامل

Probing many-body states of ultracold atoms via noise correlations

We propose to utilize density-density correlations in the image of an expanding gas cloud to probe complex many-body states of trapped ultracold atoms. In particular, we show how this technique can be used to detect superfluidity of fermionic gases and to study spin correlations of multicomponent atoms in optical lattices. The feasibility of the method is investigated by analysis of the relevan...

متن کامل

Competition between Anderson localization and antiferromagnetism in correlated lattice fermion systems with disorder.

The magnetic ground state phase diagram of the disordered Hubbard model at half-filling is computed in dynamical mean-field theory supplemented with the spin resolved, typical local density of states. The competition between many-body correlations and disorder is found to stabilize paramagnetic and antiferromagnetic metallic phases at weak interactions. Strong disorder leads to Anderson localiz...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009