Localized projective measurement of a quantum field in noninertial frames
Abstract
We propose a projective operator formalism that is wellsuited to study the correlations of quantum fields in noninertial frames and curved spacetimes. We generalize a Glauber model of detection of a single localized field mode to allow for making measurements in an arbitrary reference frame. We show that the model correctly reproduces the Unruh temperature formula of a single accelerated detector, and use it to extract vacuum entanglement by a pair of counteraccelerating detectors. This latter example is a proof of principle that this approach will be appropriate to further studies on the nature of entanglement in curved spacetimes and, in general, to model experimentally feasible scenarios in quantum field theory in noninertial frames. Finally, as further confirmation of the validity of our approach, we introduce an explicit perturbative matterradiation interaction model and show that under uniform acceleration it reproduces both the generalized Glauber model and the projective measurement results in the weak coupling regime.
 Publication:

Classical and Quantum Gravity
 Pub Date:
 December 2013
 DOI:
 10.1088/02649381/30/23/235006
 arXiv:
 arXiv:1203.0655
 Bibcode:
 2013CQGra..30w5006D
 Keywords:

 Quantum Physics;
 General Relativity and Quantum Cosmology
 EPrint:
 5 pages, 2 figures. v2 Significant increase in the detail level regarding the motivation of the detector model