Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Quantum teleportation in terms of Dirac modes between accelerated
  observers   We have studied entanglement between two Dirac modes respectively observed by
two independently accelerated observers. Due to Unruh effect, the entanglement
degrades, but residual nonzero entanglement remains even when the accelerations
of both observers are infinite. We have also investigated quantum teleportation
using entangled Dirac modes, and calculated the fidelities in various cases. In
general, the fidelity depends on the single-qubit state $\gamma|0\rangle
+\delta|1\rangle$ to be teleported, as well as which Bell state to use. In the
limit that both accelerations are infinite, the average fidelity in using
$|\phi^\pm\rangle\equiv\frac{1}{2}(|00\rangle\pm |11\rangle) $ is
$\frac{3}{4}$, while that in using $|\psi^\pm\rangle\equiv \frac{1}{2}
(|01\rangle\pm |10\rangle) $ is $\frac{1}{2} + |\gamma|^2 |\delta|^2$.

35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
17
The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph