We construct a number(n)-resolved master equation (ME) approach under self-consistent Born approxi- mation (SCBA) for noise spectrum calculation. The formulation is essentially non-Markovian and incorporates pro...We construct a number(n)-resolved master equation (ME) approach under self-consistent Born approxi- mation (SCBA) for noise spectrum calculation. The formulation is essentially non-Markovian and incorporates properly the interlay of the multi-tunneling processes and many-body correlations. We apply this approach to the chall1enging nonequilibrium Kondo system and predict a profound nonequilibrium Kondo signature in the shot noise spectrum. The proposed n-SCBA-ME scheme goes completely beyond the scope of the Born-Markovian master equation approach, in the sense of being applicable to the shot noise of transport under small bias voltage, in non-Markovian regime, and with strong Coulomb correlations as favorably demonstrated in the nonequilibrium Kondo system.展开更多
基金supprt from National Science Foundation of China (Nos.21033008,21073169,21103157)National Basic Research Program of China(No.2010CB923300 and No.2011CB921400)+2 种基金Fundamental Research Funds for the Central Universities of China (No.2340000034)Innovation Funds for Young Researchers of USTC(No.2340000025)Hong Kong UGC(No.AoE/P-04/08-2)
基金Supported by the National Natural Science Foundation of China under Grant Nos.11274085 and 11304031the Major State Basic Research Project of China under Grant Nos.2011CB808502,and 2012CB932704+1 种基金the Fundamental Research Funds for the Central Universities of Chinathe Program for Excellent Young Teachers in Hangzhou Normal University
文摘We construct a number(n)-resolved master equation (ME) approach under self-consistent Born approxi- mation (SCBA) for noise spectrum calculation. The formulation is essentially non-Markovian and incorporates properly the interlay of the multi-tunneling processes and many-body correlations. We apply this approach to the chall1enging nonequilibrium Kondo system and predict a profound nonequilibrium Kondo signature in the shot noise spectrum. The proposed n-SCBA-ME scheme goes completely beyond the scope of the Born-Markovian master equation approach, in the sense of being applicable to the shot noise of transport under small bias voltage, in non-Markovian regime, and with strong Coulomb correlations as favorably demonstrated in the nonequilibrium Kondo system.