Cosmological constant—the weight of the vacuum

T Padmanabhan - Physics reports, 2003‏ - Elsevier
Recent cosmological observations suggest the existence of a positive cosmological constant
Λ with the magnitude Λ (Gℏ/c3)≈ 10− 123. This review discusses several aspects of the …

Snowmass white paper: the cosmological bootstrap

D Baumann, D Green, A Joyce, E Pajer… - SciPost Physics …, 2024‏ - scipost.org
This white paper summarizes recent progress in the cosmological bootstrap, an approach to
the study of the statistics of primordial fluctuations from consistency with unitarity, locality and …

On de Sitter spacetime and string theory

P Berglund, T Hübsch, D Minic - International Journal of Modern …, 2023‏ - World Scientific
We review various aspects of de Sitter spacetime in string theory: its status as an Effective
Field Theory spacetime solution, its relation to the vacuum energy problem in string theory …

From dS to AdS and back

C Sleight, M Taronna - Journal of High Energy Physics, 2021‏ - Springer
A bstract We describe in more detail the general relation uncovered in our previous work
between boundary correlators in de Sitter (dS) and in Euclidean anti-de Sitter (EAdS) space …

Non-Gaussian features of primordial fluctuations in single field inflationary models

J Maldacena - Journal of High Energy Physics, 2003‏ - iopscience.iop.org
We compute the three point correlation functions for primordial scalar and tensor fluctuations
in single field inflationary models. We obtain explicit expressions in the slow roll limit where …

Lecture notes on holographic renormalization

K Skenderis - Classical and Quantum Gravity, 2002‏ - iopscience.iop.org
We review the formalism of holographic renormalization. We start by discussing
mathematical results on asymptotically anti-de Sitter (AdS) spacetimes. We then outline the …

From AdS to dS exchanges: Spectral representation, Mellin amplitudes, and crossing

C Sleight, M Taronna - Physical Review D, 2021‏ - APS
In this paper we take the first steps towards bridging the gap between the conformal and
cosmological bootstrap programs. We present a simple general relation between tree-level …

Low-dimensional de Sitter quantum gravity

J Cotler, K Jensen, A Maloney - Journal of High Energy Physics, 2020‏ - Springer
A bstract We study aspects of Jackiw-Teitelboim (JT) quantum gravity in two-dimensional
nearly de Sitter (dS) spacetime, as well as pure de Sitter quantum gravity in three …

Higher spin realization of the dS/CFT correspondence

D Anninos, T Hartman… - Classical and Quantum …, 2016‏ - iopscience.iop.org
We conjecture that Vasiliev's theory of higher spin gravity in four-dimensional de Sitter space
(dS 4) is holographically dual to a three-dimensional conformal field theory (CFT 3) living on …

Integral geometry and holography

B Czech, L Lamprou, S McCandlish, J Sully - Journal of High Energy …, 2015‏ - Springer
A bstract We present a mathematical framework which underlies the connection between
information theory and the bulk spacetime in the AdS 3/CFT 2 correspondence. A key …