Entanglement of pseudo-pure spinor state in accelerated frames

We study the entanglement of a class of pseudo-pure stats in non-inertial frames. We will show that logarithmic negativity decrease with respect to acceleration and we can show that there are some initially entangled states can be observed as separable states in non-inertial frames with finite acceleration. Also, it can be shown that the mutual information tends to half of its initial value in the limit of infinite acceleration.