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 |
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論文番号 | )72 |
ジャーナル | Journal of High Energy Physics |
巻 | 2014 |
号 | 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