Transformations on density operators and on positive definite operators preserving the quantum Rényi divergence
Sign Up to like & getrecommendations! Published in 2017 at "Periodica Mathematica Hungarica"
DOI: 10.1007/s10998-016-0174-8
Abstract: In a certain sense we generalize the recently introduced and extensively studied notion called quantum Rényi divergence (also called ”sandwiched Rényi relative entropy”) and describe the structures of corresponding symmetries. More precisely, we characterize all… read more here.
Keywords: positive definite; definite operators; nyi divergence; density operators ... See more keywords
Electron propagators based on generalised density operators
Sign Up to like & getrecommendations! Published in 2017 at "Molecular Physics"
DOI: 10.1080/00268976.2016.1221534
Abstract: ABSTRACT Electron binding energies and Dyson orbitals may be obtained from the poles and residues of the electron propagator. The Dyson quasiparticle equation provides a convenient route to computing this information. Systematic approximations to the… read more here.
Keywords: electron propagators; superoperator hamiltonian; density; propagators based ... See more keywords
States of charged quantum fields and their statistical properties in the presence of critical potential steps
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review A"
DOI: 10.1103/physreva.99.052116
Abstract: The evolution of charged quantum fields under the action of constant nonuniform electric fields is studied. To this end we construct density operators of the quantum fields with different initial conditions. Then we study some… read more here.
Keywords: charged quantum; fields statistical; states charged; density operators ... See more keywords