Journal
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
Volume 44, Issue 14, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1751-8113/44/14/145306
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Funding
- National Natural Science Foundation of China [11074072]
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The entanglement between two modes of a free scalar field (or a free Dirac field) is investigated in noninertial frames under the condition that they are initially prepared in a Werner state. It is found that the entanglement degradation induced by the Unruh effect highly depends on the initial purity f and the type of fields. For a fixed acceleration r, the critical values of f for the states entangled or separable are obtained in both scalar and Dirac fields. Finally, we make a comparison between the entanglement and the quantum discord and show that quantum discord is more robust than entanglement in our models.
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