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A multilayer multiconfiguration time-dependent Hartree study of the nonequilibrium Anderson impurity model at zero temperature

Journal Article · · Chemical Physics
 [1];  [2]
  1. Univ. of Colorado, Denver, CO (United States); Beijing Computational Science Research Center (China)
  2. Univ. of Freiburg (Germany)
Quantum transport is studied for the nonequilibrium Anderson impurity model at zero temperature employing the multilayer multiconfiguration time-dependent Hartree theory within the second quantization representation (ML-MCTDH-SQR) of Fock space. To address both linear and nonlinear conductance in the Kondo regime, two new techniques of the ML-MCTDH-SQR simulation methodology are introduced: (i) the use of correlated initial states, which is achieved by imaginary time propagation of the overall Hamiltonian at zero voltage and (ii) the adoption of the logarithmic discretization of the electronic continuum. Employing the improved methodology, the signature of the Kondo effect is analyzed.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1543525
Alternate ID(s):
OSTI ID: 1692157
Journal Information:
Chemical Physics, Journal Name: Chemical Physics Journal Issue: C Vol. 509; ISSN 0301-0104
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Auxiliary Master Equation for Nonequilibrium Dual-Fermion Approach journal May 2019
Auxiliary master equation for nonequilibrium dual-fermion approach text January 2018
A complete quasiclassical map for the dynamics of interacting fermions text January 2019
The multi-configurational time-dependent Hartree approach in optimized second quantization: imaginary time propagation and particle number conservation text January 2019

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