Fermionic transport in a homogeneous Hubbard model: Out-of-equilibrium dynamics with ultracold atoms

نویسندگان

  • Ulrich Schneider
  • Lucia Hackermüller
  • Jens Philipp Ronzheimer
  • Sebastian Will
  • Simon Braun
  • Thorsten Best
  • Immanuel Bloch
  • Eugene Demler
  • Stephan Mandt
  • David Rasch
  • Achim Rosch
چکیده

Ulrich Schneider, 2, ∗ Lucia Hackermüller, 3 Jens Philipp Ronzheimer, 2 Sebastian Will, 2 Simon Braun, 2 Thorsten Best, Immanuel Bloch, 2, 4 Eugene Demler, Stephan Mandt, David Rasch, and Achim Rosch Institut für Physik, Johannes Gutenberg-Universität, 55099 Mainz, Germany Fakultät für Physik, Ludwig-Maximilians-Universität, 80799 Munich, Germany School of Physics and Astronomy, University of Nottingham, NG7 2RD Nottingham, UK Max-Planck-Institut für Quantenoptik, 85748 Garching, Germany Department of Physics, Harvard University, Cambridge, MA 02138, USA Institut für Theoretische Physik, Universität zu Köln, 50937 Cologne, Germany

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

Fermionic transport and out-of-equilibrium dynamics in a homogeneous Hubbard model with ultracold atoms

Transport properties are among the defining characteristics of many important phases in condensed-matter physics. In the presence of strong correlations they are difficult to predict, even for model systems such as the Hubbard model. In real materials, additional complications arise owing to impurities, lattice defects or multi-band effects. Ultracold atoms in contrast offer the possibility to ...

متن کامل

Bose-Einstein condensation of particle-hole pairs in ultracold fermionic atoms trapped within optical lattices.

We investigate the Bose-Einstein condensation (BEC, superfluidity) of particle-hole pairs in ultracold fermionic atoms with repulsive interactions and arbitrary polarization, which are trapped within optical lattices. In the strongly repulsive limit, the dynamics of particle-hole pairs can be described by a hard-core Bose-Hubbard model. The insulator-superfluid and charge-density-wave- (CDW) su...

متن کامل

Dynamical instabilities and transient short-range order in the fermionic Hubbard model

We study the dynamics of magnetic correlations in the half-filled fermionic Hubbard model following a fast ramp of the repulsive interaction. We use Schwinger-Keldysh self-consistent second-order perturbation theory to investigate the evolution of single-particle Green’s functions and solve the nonequilibrium Bethe-Salpeter equation to study the dynamics of magnetic correlations. This approach ...

متن کامل

First-principles quantum dynamics for fermions: Application to molecular dissociation

We demonstrate that the quantum dynamics of a many-body Fermi-Bose system can be simulated using a Gaussian phase-space representation method. In particular, we consider the application of the mixed fermion-boson model to ultracold quantum gases and simulate the dynamics of dissociation of a Bose-Einstein condensate of bosonic dimers into pairs of fermionic atoms. We quantify deviations of atom...

متن کامل

T > 0 transport properties in integrable quantum lattice systems

We show that a generalized charge SU(2) symmetry of the one-dimensional (1D) Hubbard model in an infinitesimal flux φ generates half-filling states from metallic states which lead to a finite charge stiffness D(T ) at finite temperature T , whose T dependence we study. Our results are of general nature for many integrable quantum lattice systems, reveal the microscopic mechanisms behind their e...

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 2012