Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Vitor S Barroso"'
Autor:
Cameron R D Bunney, Vitor S Barroso, Steffen Biermann, August Geelmuyden, Cisco Gooding, Grégoire Ithier, Xavier Rojas, Jorma Louko, Silke Weinfurtner
Publikováno v:
New Journal of Physics, Vol 26, Iss 6, p 065001 (2024)
An accelerated observer moving through empty space sees particles appearing and disappearing, while an observer with a constant velocity does not register any particles. This phenomenon, generally known as the Unruh effect, relies on an initial vacuu
Externí odkaz:
https://doaj.org/article/bc50609453734f9ab91e8c66c149e98c
In a recent paper [J. P. M. Pitelli, Phys. Rev. D {\bf 99}, 108701 (2019)], one of us showed that the vacuum state associated to conformal fields on a Poicar\'e patch of anti-de Sitter spacetime is not $\text{AdS}$ invariant for fields satisfying non
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1acb8914e54d1b2986ee1524e0f33bbc
http://arxiv.org/abs/1908.11742
http://arxiv.org/abs/1908.11742
Quantum field theory on anti-de Sitter spacetime requires the introduction of boundary conditions at its conformal boundary, due essentially to the absence of global hyperbolicity. Here we calculate the renormalized stress-energy tensor $T_{\mu\nu}$
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::49f81f74c1f4205ea88468d4f6720cbc
http://arxiv.org/abs/1904.10806
http://arxiv.org/abs/1904.10806
Initial conditions given on a spacelike, static slice of a non-globally hyperbolic spacetime may not define the fates of classical and quantum fields uniquely. Such lack of global hyperbolicity is a well-known property of the anti-de Sitter solution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::19d4866d0b40236b3cc1feeb57391f31
http://arxiv.org/abs/1904.10920
http://arxiv.org/abs/1904.10920
We study the vacuum fluctuations of a massless scalar field $\hat{\Psi}$ on the background of a global monopole. Due to the nontrivial topology of the global monopole spacetime, characterized by a solid deficit angle parametrized by $\eta^2$, we expe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a9a7666d3a9e56203aed0649e73dbe3
Publikováno v:
Physical Review D. 96
We revisit the scattering of quantum test particles on the conical $(2+1)$-dimensional spacetime and find the scatteting amplitude as a function of the boundary conditions imposed at the appex of the cone. We show that the boundary condition is respo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1948324c5e1a7aa663c48847c681a755
https://doi.org/10.1103/physrevd.96.025006
https://doi.org/10.1103/physrevd.96.025006