Instability of de Sitter space under thermal radiation in different vacua
- 주제(키워드) inflation , quantum black holes , quantum field theory on curved space
- 주제(기타) Astronomy & Astrophysics; Physics, Particles & Fields
- 설명문(일반) [Gong, Jinn-Ouk] Ewha Womans Univ, Dept Sci Educ, Seoul 03760, South Korea; [Gong, Jinn-Ouk] Asia Pacific Ctr Theoret Phys, Pohang 37673, South Korea; [Seo, Min-Seok] Korea Natl Univ Educ, Dept Phys Educ, Cheongju 28173, South Korea
- 등재 SCIE, SCOPUS
- OA유형 Green Submitted
- 발행기관 IOP Publishing Ltd
- 발행년도 2021
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000183753
- 본문언어 영어
- Published As http://dx.doi.org/10.1088/1475-7516/2021/10/042
초록/요약
We study the instability of de Sitter space-time (dS) under thermal radiation in different vacua. We argue that the mode function solution of a scalar field in four-dimensional dS can be separated into the incoming and outgoing modes. Different vacua for dS are realized by different combinations of positive frequency modes assigned to each solution. For a minimally coupled massless scalar field, we explicitly compute the behavior of the mode function and the corresponding energy-momentum tensor in the Unruh vacuum near the horizon, and find that the horizon area increases (decreases) in time when the incoming (outgoing) mode contributes to thermal flux.
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