• Corpus ID: 251040639

Would quantum coherence be increased by curvature effect in de Sitter space?

  title={Would quantum coherence be increased by curvature effect in de Sitter space?},
  author={Shu-Min Wu and Chun-Xu Wang and Dan-Dan Liu and Xiaoming Huang and Hao-Sheng Zeng},
We study the quantum coherence in de Sitter space for the bipartite system of Alice and Bob who initially share an entangled state between the two modes of a free massive scalar field. It is shown that the space-curvature effect can produce both local coherence and correlated coherence, leading to the increase of the total coherence of the bipartite system. These results are sharp different from the Unruh effect or Hawking effect, which, in the single mode approximation, cannot produce local… 

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