Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2007-08-06
J. Phys. Soc. Jpn. 76 (2007) 114707
Physics
Condensed Matter
Strongly Correlated Electrons
12 pages, 15 figures
Scientific paper
10.1143/JPSJ.76.114707
An impurity solver based on a continuous-time quantum Monte Carlo method is developed for the Coqblin-Schrieffer model. The Monte Carlo simulation does not encounter a sign problem for antiferromagnetic interactions, and accurately reproduces the Kondo effect. Our algorithm can deal with an arbitrary number N of local degrees of freedom, becomes more efficient for larger values of N, and is hence suitable for models with orbital degeneracy. The dynamical susceptibility and the impurity t-matrix are derived with the aid of the Pad\'e approximation for various values of N, and good agreement is found with other methods and available exact results. We point out that the Korringa-Shiba relation needs correction for a finite value of the exchange interaction.
Kuramoto Yoshio
Kusunose Hiroaki
Otsuki Junya
Werner Philipp
No associations
LandOfFree
Continuous-Time Quantum Monte Carlo Method for the Coqblin-Schrieffer Model does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Continuous-Time Quantum Monte Carlo Method for the Coqblin-Schrieffer Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous-Time Quantum Monte Carlo Method for the Coqblin-Schrieffer Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-403770