Vanishing Geometric Discord in Non-Inertial Frames
arXiv:1205.1268 · doi:10.1103/PhysRevA.86.032108
Abstract
We show that quantum field correlations in non-inertial frames are not as persistent as previously thought. We perform a simple calculation showing that the geometric discord, a measure of quantum correlations, does decay to zero in the infinite acceleration limit. This result is seen to be a natural and expected consequence of considering correlations in an infinite dimensional system, and it sheds doubt on the existence of useable quantum correlations in this regime. We contrast our results with previous research showing that the acceleration-induced degradation of quantum discord was not strong enough to extinguish discord in the large acceleration limit.
9 pages, revtex4, 2 figures. V2 Added journal reference and updated to published version
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