4,241 research outputs found
Deformations of symmetric CMC surfaces in the 3-sphere
In this paper we numerically construct CMC deformations of the Lawson minimal
surfaces using a spectral curve and a DPW approach to CMC surfaces
in spaceforms.Comment: 17 pages, 5 figure
Comment on "Scaling feature of magnetic field induced Kondo-peak splittings"
In a recent work Zhang and coworkers (PRB 82, 075111 (2010)) studied the
Zeeman splitting of the Kondo resonance for the single impurity Anderson model
in a finite magnetic field with the numerical renormalization group (NRG)
method. There, it was found that with increasing magnetic field the
position of the Kondo resonance in the total spectral function \textit{does
not} approach its position in the spin resolved spectral function.
Additionally, the position of the Kondo maximum exceeded the Zeeman energy for
, where is the low energy Kondo scale of the model
(, ). In this comment we argue that both these findings
are produced by an improper choice of NRG parameter values. However, we
reproduce the crossover in the splitting from Kondo-like behavior to a
non-universal splitting larger than the Zeeman energy, but this crossover
occurs at much larger fields of the order of the charge scale.Comment: Minor revisions; same version as publishe
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