Freely-moving observer in (quasi) anti de Sitter space

Abstract

A quantum scalar field in anti de Sitter space is considered in two coordinate systems: static and FRW-like ones. It is shown that quantum vacua corresponding to each of these coordinatizations are not unitary equivalent. A choice of a physical ground state between these vacua is discussed under different setups.

typos fixed, reference added, minor corrections

References in corpus (1)

• The Unruh effect and its applications

Cited by in corpus (6)

• Local thermal observables in spatially open FRW spaces
• Quantum detectors in generic non flat FLRW space-times
• Observing quantum gravity in asymptotically AdS space
• Instability of Quantum de Sitter Spacetime
• Non-unitarity or hidden observables?
• Holography versus Correspondence principle: eternal Schwarzschild-anti-de Sitter geometry