Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Erickson Tjoa"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-20 (2024)
Abstract We analyze how the presence of closed timelike curves (CTCs) characterizing a time machine can be discerned by placing a local particle detector in a region of spacetime which is causally disconnected from the CTCs. Our study shows that not
Externí odkaz:
https://doaj.org/article/4230e8eebbf34da0b9401a107776c89c
Autor:
Erickson Tjoa, Robert B. Mann
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 3, Pp 1-30 (2022)
Abstract We study the dynamics of an Unruh-DeWitt detector interacting with a massless scalar field in an arbitrary static spherically symmetric spacetimes whose metric is characterised by a single metric function f(r). In order to obtain clean physi
Externí odkaz:
https://doaj.org/article/a26d8a50ad54486db2972d0f0f01b436
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 12, Pp 1-33 (2021)
Abstract We study the relationship between the quantization of a massless scalar field on the two-dimensional Einstein cylinder and in a spacetime with a time machine. We find that the latter picks out a unique prescription for the state of the zero
Externí odkaz:
https://doaj.org/article/6d09756701f54aa2a166943a4b21b811
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 11, Pp 1-32 (2021)
Abstract Gravitational shockwaves are simple exact solutions of Einstein equations representing the fields of ultrarelativistic sources and idealized gravitational waves (shocks). Historically, much work has focused on shockwaves in the context of po
Externí odkaz:
https://doaj.org/article/5ccd1b9141be442a9950dc313718730a
Autor:
Erickson Tjoa, Robert B. Mann
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 8, Pp 1-40 (2020)
Abstract We study the harvesting of correlations by two Unruh-DeWitt static detectors from the vacuum state of a massless scalar field in a background Vaidya spacetime consisting of a collapsing null shell that forms a Schwarzschild black hole (herea
Externí odkaz:
https://doaj.org/article/0ff76d1728a6448a8cd2eb24f800336d
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 6, Pp 1-20 (2019)
Abstract We study the phenomenon of entanglement extraction from the vacuum of a massless scalar field in (1 + 1) dimensional spacetime in presence of a moving Dirichlet boundary condition, i.e. mirror spacetime, using two inertial Unruh-DeWitt detec
Externí odkaz:
https://doaj.org/article/290aaf88bbe04a71b9323184bc90c165
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 7, Pp 1-2 (2019)
We provide a minor correction to the caption of figure 3, as well as a replacement for the left figure of figure 5.
Externí odkaz:
https://doaj.org/article/ee611ec7f3274f338feff022a7520ed0
Publikováno v:
Physical Review D. 105
In this work we study nonperturbatively the transmission of classical and quantum information in globally hyperbolic spacetimes, where the communication channel is between two qubit detectors interacting with a quantized massless scalar field via del
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9645f17299367f3f596a4429af4499a6
https://doi.org/10.1103/physrevd.105.085011
https://doi.org/10.1103/physrevd.105.085011
Autor:
Erickson Tjoa, Finnian Gray
We present a "holographic" reconstruction of bulk spacetime geometry using correlation functions of a massless field living at the "future boundary" of the spacetime, namely future null infinity $\mathscr{I}^+$. It is holographic in the sense that th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8e663cce1efec47cd60bcb30c837c2eb
http://arxiv.org/abs/2203.15830
http://arxiv.org/abs/2203.15830
Autor:
Erickson Tjoa
In this work we revisit the famous Fermi two-atom problem, which concerns how relativistic causality impacts atomic transition probabilities, using the tools from relativistic quantum information (RQI) and algebraic quantum field theory (AQFT). The p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4bd125c9a0b444f8e33cf64024ca6bc9