Population bound effects on bosonic correlations in noninertial frames

Concerning the bipartition A ¯ R (Alice with an observer in Rindler’s region IV ), we show that no entanglement is created whatever the value of N and a. Furthermore, AR entanglement is very quickly lost for finite N and for N ! 1. We will study in detail the mutual information conservation law found for bosons and fermions. By means of the boundary effects associated to N finiteness, we will show that for bosons this law stems from classical correlations while for fermions it has a quantum origin. Finally, we will present the strong N dependence of the entanglement in R ¯