TY - JOUR
T1 - Snowmass2021 - Letter of interest cosmology intertwined IV
T2 - The age of the universe and its curvature
AU - Snowmass
AU - Di Valentino, Eleonora
AU - Anchordoqui, Luis A.
AU - Akarsu, Özgür
AU - Ali-Haimoud, Yacine
AU - Amendola, Luca
AU - Arendse, Nikki
AU - Asgari, Marika
AU - Ballardini, Mario
AU - Basilakos, Spyros
AU - Battistelli, Elia
AU - Benetti, Micol
AU - Birrer, Simon
AU - Bouchet, François R.
AU - Bruni, Marco
AU - Calabrese, Erminia
AU - Camarena, David
AU - Capozziello, Salvatore
AU - Chen, Angela
AU - Chluba, Jens
AU - Chudaykin, Anton
AU - Colgáin, Eoin
AU - Cyr-Racine, Francis Yan
AU - de Bernardis, Paolo
AU - de Cruz Pérez, Javier
AU - Delabrouille, Jacques
AU - Escamilla-Rivera, Celia
AU - Ferté, Agnès
AU - Finelli, Fabio
AU - Freedman, Wendy
AU - Frusciante, Noemi
AU - Giusarma, Elena
AU - Gómez-Valent, Adrià
AU - Handley, Will
AU - Harrison, Ian
AU - Hart, Luke
AU - Heavens, Alan
AU - Hildebrandt, Hendrik
AU - Holz, Daniel
AU - Huterer, Dragan
AU - Ivanov, Mikhail M.
AU - Joudaki, Shahab
AU - Kamionkowski, Marc
AU - Karwal, Tanvi
AU - Knox, Lloyd
AU - Kumar, Suresh
AU - Lamagna, Luca
AU - Lesgourgues, Julien
AU - Lucca, Matteo
AU - Muir, Jessica
AU - Pace, Francesco
N1 - Either 'literature review' and beyond 3 months, or 'review article' and OA not required.
PY - 2021/9/1
Y1 - 2021/9/1
N2 - A precise measurement of the curvature of the Universe is of prime importance for cosmology since it could not only confirm the paradigm of primordial inflation but also help in discriminating between different early-Universe scenarios. Recent observations, while broadly consistent with a spatially flat standard Λ Cold Dark Matter (ΛCDM) model, show tensions that still allow (and, in some cases, even suggest) a few percent deviations from a flat universe. In particular, the Planck Cosmic Microwave Background power spectra, assuming the nominal likelihood, prefer a closed universe at more than 99% confidence level. While new physics could be at play, this anomaly may be the result of an unresolved systematic error or just a statistical fluctuation. However, since positive curvature allows a larger age of the Universe, an accurate determination of the age of the oldest objects provides a smoking gun in confirming or falsifying the current flat ΛCDM model.
AB - A precise measurement of the curvature of the Universe is of prime importance for cosmology since it could not only confirm the paradigm of primordial inflation but also help in discriminating between different early-Universe scenarios. Recent observations, while broadly consistent with a spatially flat standard Λ Cold Dark Matter (ΛCDM) model, show tensions that still allow (and, in some cases, even suggest) a few percent deviations from a flat universe. In particular, the Planck Cosmic Microwave Background power spectra, assuming the nominal likelihood, prefer a closed universe at more than 99% confidence level. While new physics could be at play, this anomaly may be the result of an unresolved systematic error or just a statistical fluctuation. However, since positive curvature allows a larger age of the Universe, an accurate determination of the age of the oldest objects provides a smoking gun in confirming or falsifying the current flat ΛCDM model.
UR - http://www.scopus.com/inward/record.url?scp=85109330537&partnerID=8YFLogxK
U2 - 10.1016/j.astropartphys.2021.102607
DO - 10.1016/j.astropartphys.2021.102607
M3 - Review article
AN - SCOPUS:85109330537
VL - 131
JO - Astroparticle Physics
JF - Astroparticle Physics
SN - 0927-6505
M1 - 102607
ER -