Volume 82, Number 5, June 2008
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||27 May 2008|
Continuous-time auxiliary-field Monte Carlo for quantum impurity models
Theoretische Physik, ETH Zürich - 8093 Zürich, Switzerland
2 Department of Physics, Columbia University - 538 West, 120th Street, New York, NY 10027, USA
3 Institut de Physique Théorique, CEA/DSM/IPhT-CNRS/URA 2306 CEA-Saclay F-91191 Gif-sur-Yvette, France, EU
Corresponding author: email@example.com
Accepted: 7 April 2008
We present a continuous-time Monte Carlo method for quantum impurity models, which combines a weak-coupling expansion with an auxiliary-field decomposition. The method is considerably more efficient than Hirsch-Fye and free of time discretization errors, and is particularly useful as impurity solver in large cluster dynamical mean-field theory (DMFT) calculations.
PACS: 71.10.Fd – Lattice fermion models (Hubbard model, etc.) / 02.70.Ss – Quantum Monte Carlo methods / 71.27.+a – Strongly correlated electron systems; heavy fermions
© EPLA, 2008
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