Spectral function of the Anderson impurity model at finite temperatures

Details Spectral function of the Anderson impurity model at finite temperatures Spectral function of the Anderson impurity model at finite temperatures

2010-03-16

arxiv.org/abs/1003.3188v2

Phys. Rev. B 81, 235120 (2010)

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 3 figures; new references added

Scientific paper

10.1103/PhysRevB.81.235120

Using the functional renormalization group (FRG) and the numerical renormalization group (NRG), we calculate the spectral function of the Anderson impurity model at zero and finite temperatures. In our FRG scheme spin fluctuations are treated non-perturbatively via a suitable Hubbard-Stratonovich field, but vertex corrections are neglected. A comparison with our highly accurate NRG results shows that this FRG scheme gives a quantitatively good description of the spectral line-shape at zero and finite temperatures both in the weak and strong coupling regimes, although at zero temperature the FRG is not able to reproduce the known exponential narrowing of the Kondo resonance at strong coupling.

Affiliated with

Also associated with

No associations

Rating

Spectral function of the Anderson impurity model at finite temperatures 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 Spectral function of the Anderson impurity model at finite temperatures, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral function of the Anderson impurity model at finite temperatures will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-246582