Gravitational SL(2, ℝ) algebra on the light cone
Sign Up to like & getrecommendations! Published in 2021 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2021)057
Abstract: Abstract In a region with a boundary, the gravitational phase space consists of radiative modes in the interior and edge modes at the boundary. Such edge modes are necessary to explain how the region couples… read more here.
Keywords: gravitational algebra; edge modes; light cone; phase space ... See more keywords
An intrinsic cosmological observer
Sign Up to like & getrecommendations! Published in 2025 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ae134c
Abstract: There has been much recent interest in the necessity of an observer degree of freedom in the description of local algebras in semiclassical gravity. In this work, we describe an example where the observer can… read more here.
Keywords: cosmological observer; intrinsic cosmological; gravity; algebra ... See more keywords