Thermal entanglement of Hubbard dimers in the nonextensive statistics

► Effects of nonextensivity on various quantities such as auto-correlation, pair correlation, concurrence and conditional entropy in the Hubbard dimers have been investigated by using the nonextensive statistics. ► I discuss the origin of the entropic index q and possibility of finding the interesting phenomena by experimental methods. ► The calculation method has been applied also to the Heisenberg dimer. ► This is the first systematic study of effects of nonextensivity on thermal entanglement of fermion systems.