Quantum-corrected anti–de Sitter spacetime

JC Thompson, E Winstanley - Physical Review D, 2024 - APS
We study the backreaction of a quantum scalar field on anti–de Sitter (AdS) spacetime. The
renormalized expectation value of the stress-energy tensor operator for a massless …

Circular motion in (anti-) de Sitter spacetime: thermality versus finite size

CRD Bunney, J Louko - arXiv preprint arXiv:2406.17643, 2024 - arxiv.org
Anti-de Sitter spacetime and the static patch of de Sitter spacetime are arenas for
investigating thermal and finite-size effects seen by an accelerated quantum observer. We …

Response of an Unruh-DeWitt detector near an extremal black hole

A Conroy, P Taylor - Physical Review D, 2022 - APS
We consider the response of an Unruh-DeWitt detector near an extremal charged black
hole, modeling the near-horizon region of this extremal spacetime by the Bertotti-Robinson …

Vortical effects for free fermions on anti-de Sitter space-time

VE Ambrus, E Winstanley - Symmetry, 2021 - mdpi.com
Here, we study a quantum fermion field in rigid rotation at finite temperature on anti-de Sitter
space. We assume that the rotation rate Ω is smaller than the inverse radius of curvature ℓ …

Quantum vacuum effects in braneworlds on AdS bulk

AA Saharian - Universe, 2020 - mdpi.com
We review the results of investigations for brane-induced effects on the local properties of
quantum vacuum in background of AdS spacetime. Two geometries are considered: a brane …

Vacuum polarization on topological black holes with Robin boundary conditions

T Morley, E Winstanley, P Taylor - Physical Review D, 2021 - APS
We compute the renormalized vacuum polarization for a massless, conformally coupled
scalar field on asymptotically anti–de Sitter black hole backgrounds. Mixed (Robin) …

After collapse: On how a physical vacuum can change the black hole paradigm

J Arrechea, C Barceló, V Boyanov - New Frontiers in Gravitational …, 2024 - Springer
Abstract Standard General Relativity assumes that, in the absence of classical matter
sources, spacetime is empty. This chapter considers and analyses the new behaviours of …

Renormalized stress-energy tensor on global anti-de Sitter space-time with Robin boundary conditions

T Morley, S Namasivayam, E Winstanley - General Relativity and …, 2024 - Springer
We study the renormalized stress-energy tensor (RSET) for a massless, conformally coupled
scalar field on global anti-de Sitter space-time in four dimensions. Robin (mixed) boundary …

Vacuum fermionic currents in braneworld models on AdS bulk with a cosmic string

S Bellucci, WO dos Santos, ER de Mello… - Journal of High Energy …, 2021 - Springer
A bstract We investigate the effects of a brane and magnetic-flux-carrying cosmic string on
the vacuum expectation value (VEV) of the current density for a charged fermionic field in the …

Vacuum densities and the Casimir forces for branes orthogonal to the AdS boundary

S Bellucci, AA Saharian, VK Kotanjyan - Physical Review D, 2022 - APS
For a massive scalar field with general curvature coupling we evaluate the Wightman
function in the geometry of two parallel branes perpendicular to the AdS boundary. On the …