Continuous-time auxiliary field Monte Carlo for quantum impurity models

Details Continuous-time auxiliary field Monte Carlo for quantum impurity models Continuous-time auxiliary field Monte Carlo for quantum impurity models

2008-02-21

arxiv.org/abs/0802.3222v3

EPL 82, 57003 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 5 figures

Scientific paper

10.1209/0295-5075/82/57003

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.

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