Entanglement entropy of α-vacua in de sitter space

Sugumi Kanno, Jeff Murugan, Jonathan P. Shock, Jiro Soda

研究成果: ジャーナルへの寄稿学術誌査読

33 被引用数 (Scopus)

抄録

We consider the entanglement entropy of a free massive scalar field in the one parameter family of a-vacua in de Sitter space by using a method developed by Maldacena and Pimentel. An a-vacuum can be thought of as a state filled with particles from the point of view of the Bunch-Davies vacuum. Of all the a-vacua we find that the entanglement entropy takes the minimal value in the Bunch-Davies solution. We also calculate the asymptotic value of the Renyi entropy and find that it increases as a increases. We argue these features stem from pair condensation within the non-trivial a-vacua where the pairs have an intrinsic quantum correlation.

本文言語英語
論文番号)72
ジャーナルJournal of High Energy Physics
2014
7
DOI
出版ステータス出版済み - 2014
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学

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