Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Einstein-Podolsky-Rosen correlation seen from moving observers   Within the framework of relativistic quantum theory, we consider the
Einstein-Podolsky-Rosen (EPR) gedanken-experiment in which measurements of the
spin are performed by moving observers. We find that the perfect
anti-correlation in the same direction between the EPR pair no longer holds in
the observers' frame. This does not imply a breakdown of the non-local
correlation. We explicitly show that the observers must measure the spin in
appropriately chosen different directions in order to observe the perfect
anti-correlation. This fact should be taken into account in utilizing the
entangled state in quantum communication by moving observers.

26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
30
The categories of this paper are: q-alg
35
The categories of this paper are: mtrl-th
24
The categories of this paper are: dg-ga
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
29
The categories of this paper are: funct-an
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
7
The categories of this paper are: hep-th