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Abstract
The behavior of accelerating Unruh-DeWitt detectors coupled with a spinor field in (3+1)-dimensional spacetime is investigated. For a single point-like detector with Gaussian switching function, the transition probability increases with the acceleration and thus the antiUnruh effect effect cannot occur. Due to the spinor structure of the Dirac field, UV divergences are encountered in the calculation of the entanglement between the detectors. After introducing some UV cutoff Λ, the negativity of detectors is shown to behave nonmonotonically with respect to the acceleration. Besides, the negativity increases with the cutoff Λ and decreases with the distance between the detectors. The mutual information between the two detectors is also discussed.
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Details
1 Fudan University, Department of Physics & State Key Laboratory of Surface Physics, Shanghai, China (GRID:grid.8547.e) (ISNI:0000 0001 0125 2443)
2 Shanghai High School, Shanghai, China (GRID:grid.8547.e); Fudan University, Department of Physics & State Key Laboratory of Surface Physics, Shanghai, China (GRID:grid.8547.e) (ISNI:0000 0001 0125 2443)
3 University of Science and Technology, Hefei, China (GRID:grid.59053.3a) (ISNI:0000000121679639); University of Science and Technology of China, Shanghai Research Center for Quantum Science and CAS Center for Excellence in Quantum Information and Quantum Physics, Shanghai, China (GRID:grid.59053.3a) (ISNI:0000000121679639); Fudan University, Department of Physics & State Key Laboratory of Surface Physics, Shanghai, China (GRID:grid.8547.e) (ISNI:0000 0001 0125 2443)