TY  - JOUR
A1  - Henkel, Carsten
T1  - Heat transfer and entanglement
BT  - non-equilibrium correlation spectra of two quantum oscillators
JF  - Annalen der Physik
N2  - The non-equilibrium state of two oscillators with a mutual interaction and coupled to separate heat baths is discussed. Bosonic baths are considered, and an exact spectral representation for the elements of the covariance matrix is provided analytically. A wide class of spectral densities for the relevant bath modes is allowed for. The validity of the fluctuation-dissipation relation is established for global equilibrium (both baths at the same temperature) in the stationary state. Spectral measures of entanglement are suggested by comparing to the equilibrium spectrum of zero-point fluctuations. No rotating-wave approximation is applied, and anomalous heat transport from cold to hot bath, as reported in earlier work, is demonstrated not to occur.
KW  - entanglement
KW  - heat transfer
KW  - non-equilibrium steady state
KW  - master
KW  - equation
KW  - quantum thermodynamics
Y1  - 2021
U6  - https://doi.org/10.1002/andp.202100089
SN  - 0003-3804
SN  - 1521-3889
VL  - 533
IS  - 10
PB  - Wiley-VCH
CY  - Weinheim
ER  -