Quantum properties of fermionic fields in multi-event horizon spacetime

Does anti-Unruh effect assist quantum entanglement and coherence?

“…This discovery represents a novel outcome. It was shown in the previous research that both quantum entanglement and coherence reduce under the influence of the Unruh effect [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46], which is obviously different from our results. The reason for the difference is: the previous papers mainly consider free models in the full space and a Unruh-Dewitt model without boundary conditions, while we consider a Unruh-Dewitt model in the cavity model with boundary condition.…”

“…These opposite changes between quantum entanglement and coherence under the same processes suggest the difference between them. Furthermore, previous studies have indicated that the Unruh effect consistently leads to a simultaneous reduction in both entanglement and coherence [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46]. The reason for the different results is: the previous articles mainly consider free models in the full space and a Unruh-Dewitt model without boundary conditions, while we consider a Unruh-Dewitt model in the cavity model with boundary condition.…”

“…According to the equivalence principle, the investigation of the Unruh effect holds great significance for studying Hawking radiation and its associated issues, including thermodynamics and the problem of information loss [29][30][31]. Generally, both the Unruh effect and Hawking radiation have been observed to reduce quantum entanglement and coherence [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46].…”

“…Additionally, it raises the question of whether the Unruh and anti-Unruh effects exert similar influences on both quantum entanglement and coherence within the UDW detector model. In previous studies [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46], both the free field model and the UDW model did not take boundary conditions into account. However, in our paper, we consider the boundary conditions in the UDW model.…”