Quantum coherence of multi-partite fermionic fields in non-inertial frames beyond single-mode approximation

We investigate the quantum coherence of arbitrarily N-partite GHZ and W states for fermionic fields in the non-inertial frame and beyond the single-mode approximation. We first derive the analytical expression of the l(1)-norm coherence for the considered systems and then study numerically the dependence of quantum coherence on its parameters. It is shown that quantum coherence can change monotonically or non-monotonically with both the accelerated parameter gamma and the number n of the accelerated observers, but changes only non-monotonically with parameter q(R). The parameter regions in which quantum coherence changes monotonically or non-monotonically are analyzed. The main difference between GHZ and W states is that quantum coherence for the former has no dependence on the number N of the subsystems, but has dependence for the later.