Physics – Condensed Matter – Statistical Mechanics
Scientific paper
2010-04-04
Physica A 390 (2011) 1486
Physics
Condensed Matter
Statistical Mechanics
28 pages, 6 figures; the final version accepted in Physica A
Scientific paper
The thermal entanglement of the Hubbard dimer (two-site Hubbard model) has been studied with the nonextensive statistics. We have calculated the auto-correlation ($O_q$), pair correlation ($L_q$), concurrence ($\Gamma_q$) and conditional entropy ($R_q$) as functions of entropic index $q$ and the temperature $T$. The thermal entanglement is shown to considerably depend on the entropic index. For $q < 1.0$, the threshold temperature where $\Gamma_q$ vanishes or $R_q$ changes its sign is more increased and the entanglement may survive at higher temperatures than for $q=1.0$. Relations among $L_q$, $\Gamma_q$ and $R_q$ are investigated. The physical meaning of the entropic index $q$ is discussed with the microcanonical and superstatistical approaches. The nonextensive statistics is applied also to Heisenberg dimers.
No associations
LandOfFree
Thermal entanglement of Hubbard dimers in the nonextensive statistics does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Thermal entanglement of Hubbard dimers in the nonextensive statistics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Thermal entanglement of Hubbard dimers in the nonextensive statistics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-636263