Abstract
We investigate the quantum radiation emitted by a uniformly accelerated Unruh-DeWitt detector in de Sitter spacetime. We find that there exists a nonvanishing quantum radiation at late times in the radiation zone of the conformally flat coordinates, which cover the region behind the cosmological horizon for the accelerated detector. The theoretical structure of producing the late-time quantum radiation is similar to that of the same model in Minkowski spacetime: it comes from a nonlocal correlation of the quantum field in the Bunch-Davies vacuum state, which can be traced back to the entanglement between the field modes defined in different regions in de Sitter spacetime.
| Original language | English |
|---|---|
| Article number | 105012 |
| Journal | Physical Review D |
| Volume | 98 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Jan 1 2018 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
Cite this
Late-time quantum radiation by a uniformly accelerated detector in de Sitter spacetime. / Yamaguchi, Shumpei; Tatsukawa, Rumi; Lin, Shih Yuin; Yamamoto, Kazuhiro.
In: Physical Review D, Vol. 98, No. 10, 105012, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Late-time quantum radiation by a uniformly accelerated detector in de Sitter spacetime
AU - Yamaguchi, Shumpei
AU - Tatsukawa, Rumi
AU - Lin, Shih Yuin
AU - Yamamoto, Kazuhiro
PY - 2018/1/1
Y1 - 2018/1/1
N2 - We investigate the quantum radiation emitted by a uniformly accelerated Unruh-DeWitt detector in de Sitter spacetime. We find that there exists a nonvanishing quantum radiation at late times in the radiation zone of the conformally flat coordinates, which cover the region behind the cosmological horizon for the accelerated detector. The theoretical structure of producing the late-time quantum radiation is similar to that of the same model in Minkowski spacetime: it comes from a nonlocal correlation of the quantum field in the Bunch-Davies vacuum state, which can be traced back to the entanglement between the field modes defined in different regions in de Sitter spacetime.
AB - We investigate the quantum radiation emitted by a uniformly accelerated Unruh-DeWitt detector in de Sitter spacetime. We find that there exists a nonvanishing quantum radiation at late times in the radiation zone of the conformally flat coordinates, which cover the region behind the cosmological horizon for the accelerated detector. The theoretical structure of producing the late-time quantum radiation is similar to that of the same model in Minkowski spacetime: it comes from a nonlocal correlation of the quantum field in the Bunch-Davies vacuum state, which can be traced back to the entanglement between the field modes defined in different regions in de Sitter spacetime.
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UR - http://www.scopus.com/inward/citedby.url?scp=85057873356&partnerID=8YFLogxK
U2 - 10.1103/PhysRevD.98.105012
DO - 10.1103/PhysRevD.98.105012
M3 - Article
AN - SCOPUS:85057873356
VL - 98
JO - Physical Review D
JF - Physical Review D
SN - 2470-0010
IS - 10
M1 - 105012
ER -