Publications [#245080] of Harold U. Baranger

Papers Published
  1. Liu, DE; Chandrasekharan, S; Baranger, HU, Conductance of quantum impurity models from quantum monte carlo, Physical Review B - Condensed Matter and Materials Physics, vol. 82 no. 16 (2010), pp. 165447 [repository], [doi] .

    The conductance of two Anderson impurity models, one with twofold and another with fourfold degeneracy, representing two types of quantum dots, is calculated using a world-line quantum Monte Carlo (QMC) method. Extrapolation of the imaginary time QMC data to zero frequency yields the linear conductance, which is then compared to numerical renormalization-group results in order to assess its accuracy. We find that the method gives excellent results at low temperature (T TK) throughout the mixed-valence and Kondo regimes but it is unreliable for higher temperature. © 2010 The American Physical Society.