Distortion of a reduced equilibrium density matrix: Influence on quantum emulation

@article{Schwenk2016DistortionOA,
  title={Distortion of a reduced equilibrium density matrix: Influence on quantum emulation},
  author={Iris Schwenk and Michael Marthaler},
  journal={Physical Review B},
  year={2016},
  volume={93},
  pages={014305}
}
  • Iris Schwenk, Michael Marthaler
  • Published 2016
  • Physics
  • Physical Review B
  • We study a system coupled to external degrees of freedom, called bath, where we assume that the total system, consisting of system and bath is in equilibrium. An expansion in the coupling between system and bath leads to a general form of the reduced density matrix of the system as a function of the bath selfenergy. The coupling to the bath results in a renormalization of the energies of the system and in a change of the eigenbasis. This theory is applicable to quantum emulators in thermal… CONTINUE READING

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