Now showing items 1-6 of 6
Quantum entanglement and the self-trapping transition in polaronic systems
We revisit from a quantum-information perspective a classic problem of polaron theory in one dimension. In the context of the Holstein model we show that a simple analysis of quantum entanglement between excitonic and ...
Two oscillators in a dissipative bath
Two forms of dissipation are applied to a system of two coupled harmonic oscillators. Result¬ing quantum master equations are studied with the help of quantum characteristic functions. The effects of dissipation on quantum ...
Density matrix negativity for two oscillators in an Agarwal bath
A system of two harmonic oscillators is placed in an Agarwal bath. The resulting quantum master equations are studied with the help of quantum characteristic functions. The density matrix positivity is ...
Reduced density matrix and combined dynamics of electrons and nuclei
Nuclear dynamics is incorporated into an efficient density matrix formalism of electronic dynamics which has been applied to molecular systems containing thousands of atoms. The formalism for the combined dynamics of ...
Quantum dissipative master equations : some exact results
With the help of quantum characteristic functions some exact results are found for two quantum dissipative master equations which contain dissipative Liouvillian operators of the Lindblad-type corresponding to two forms ...
Energy dissipation mechanisms in carbon nanotube oscillators
Energy transfer from the translational degrees of freedom to phonon modes is studied for isolated systems of two coaxial carbon nanotubes, which may serve as a nearly frictionless nano-oscillator. It is found that for ...