  The separability in multiqubit pure and mixed GHZ and W states with an
accelerating qubit has been characterized using Abe Rajagopal (AR) $ q
$-conditional entropy. We observe that the pure multiqubit GHZ and W states in
the inertial : non-inertial bipartition with one of their qubits being
accelerated will remain non-separable irrespective of the qubit's acceleration.
In these systems, we effectively captured the variation of their
non-separability with respect to the acceleration of the qubit and the AR $ q
$-conditional entropy parameter $ q $. However, in the corresponding multiqubit
mixed states obtained by introducing a noise to the above pure states, one
could get stronger conditions on their separability in the inertial :
non-inertial bipartition, in terms of the mixing parameter, acceleration of the
qubit and the number of qubits in the system, in the asymptotic limit of
parameter $ q $. These conditions obtained from AR $ q $-conditional entropy
serves as a necessary conditions for separability in such multiqubit states
with a relativistic qubit.
