Decoherence of Dirac-particle quantumness for fermionic fields in a dilatonic black hole
arXiv:2105.09714 · doi:10.1002/andp.202100310
Abstract
The quantumness of Dirac paticles for quantized fields in a dilatonic black hole is estimated by means of quantum channel. We develop a general Bloch vector representation of quantum channel in black hole spacetimes beyond single mode approximation. The nonclassicality of Dirac particles can be measured by the minimization of quantum coherence over all orthonormal basis sets. The quantumness of the channel decreases as the dilaton parameter increases. The interplay between the external reservoir noise and dilaton black hole on the dynamical behavior of quantum coherence and steerability is investigated in the Pauli basis. The external environment is modelled by a random telegraph noise channel. The monotonous decay of quantum nonlocality occurs in the weak coupling case. The degradation and revival of quantum nonlocality are observed in the strong coupling condition. It is found that quantum fluctuation effects of the external reservoir can protect quantum coherence and steerability from the information loss of the black hole.
14pages, 3 figures
References in corpus (7)
- Shadow of a Kaluza-Klein rotating dilaton black hole
- Fermionic mode entanglement in quantum information
- Quantum discord and measurement-induced disturbance in the background of dilaton black holes
- Influence of an anisotropic matter field on the shadow of a rotating black hole
- Open quantum system approach to Gibbons-Hawking effect of de Sitter space-time
- Quasibound states of charged dilatonic black holes
- Analytical Study of a Kerr-Sen Black Hole and a Charged Massive Scalar Field