Inflation and Dark Energy from Spectroscopy at $z > 2$

Simone Ferraro , Michael J. Wilson , Muntazir Abidi , David Alonso , Behzad Ansarinejad , Robert Armstrong , Jacobo Asorey , Arturo Avelino , Carlo Baccigalupi , Kevin Bandura , Nicholas Battaglia , Chetan Bavdhankar , Joséluis Bernal , Florian Beutler , Matteo Biagetti , Guillermo A. Blanc , Jonathan Blazek , Adam S. Bolton , Julian Borrill , Brenda Frye , Elizabeth Buckley-Geer , Philip Bull , Cliff Burgess , Christian T. Byrnes , Zheng Cai , Francisco J Castander , Emanuele Castorina , Tzu-Ching Chang , Jonás Chaves-Montero , Shi-Fan Chen , Xingang Chen , Christophe Balland (1) , Christophe Yèche (2) , J.D. Cohn , William Coulton , Helene Courtois (3) , Rupert A.C. Croft , Francis-Yan Cyr-Racine , Guido d'Amico , Kyle Dawson , Jacques Delabrouille (4, 5) , Arjun Dey , Olivier Doré , Kelly A. Douglass , Duan Yutong , Cora Dvorkin , Alexander Eggemeier , Daniel Eisenstein , Xiaohui Fan , Pedro G. Ferreira , Andreu Font-Ribera , Simon Foreman , Juan García-Bellido , Martina Gerbino , Vera Gluscevic , Satya{gontcho A Gontcho} , Daniel Green , Julien Guy , Changhoon Hahn , Shaul Hanany , Will Handley , Nimish Hathi (6) , Adam J. Hawken , César Hernández-Aguayo , Renée Hložek , Dragan Huterer , Mustapha Ishak , Marc Kamionkowski , Dionysios Karagiannis , Ryan E. Keeley , Robert Kehoe , Rishi Khatri , Alex Kim , Jean-Paul Kneib , Juna A. Kollmeier , Ely D. Kovetz , Elisabeth Krause , Alex Krolewski , Benjamin L'Huillier , Martin Landriau , Michael Levi , Michele Liguori , Eric Linder , Zarija Lukić , Axel de La Macorra , Andrés A. Plazas , Jennifer L. Marshall , Paul Martini , Kiyoshi Masui , Patrick Mcdonald , P. Daniel Meerburg , Joel Meyers , Mehrdad Mirbabayi , John Moustakas , Adam D. Myers , Nathalie Palanque-Delabrouille (2) , Laura Newburgh , Jeffrey A. Newman , Gustavo Niz , Hamsa Padmanabhan , Povilas Palunas , Will J. Percival , Francesco Piacentini , Matthew M. Pieri (6) , Anthony L. Piro , Abhishek Prakash , Jason Rhodes , Ashley J. Ross , Graziano Rossi , Gwen C. Rudie , Lado Samushia , Misao Sasaki , Emmanuel Schaan , David J. Schlegel , Marcel Schmittfull , Michael Schubnell , Neelima Sehgal , Leonardo Senatore , Hee-Jong Seo , Arman Shafieloo , Huanyuan Shan , Joshua D. Simon , Sara Simon , Zachary Slepian , Anže Slosar , Srivatsan Sridhar , Albert Stebbins , Stephanie Escoffier (6) , Eric R. Switzer , Gregory Tarlé , Mark Trodden , Cora Uhlemann , L. Arturo Urenña-López , Eleonora Di Valentino , M. Vargas-Magaña , Yi Wang , Scott Watson , Martin White , Weishuang Xu , Byeonghee Yu , Gong-Bo Zhao , Yi Zheng , Hong-Ming Zhu

1 LPNHE (UMR_7585) - Laboratoire de Physique Nucléaire et de Hautes Énergies
2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
3 IP2I Lyon - Institut de Physique des 2 Infinis de Lyon
4 APC - Cosmologie
5 CEA - CEA- Saclay
6 CPPM - Centre de Physique des Particules de Marseille

The expansion of the Universe is understood to have accelerated during two epochs: in its very first moments during a period of Inflation and much more recently, at $z < 1$, when Dark Energy is hypothesized to drive cosmic acceleration. The undiscovered mechanisms behind these two epochs represent some of the most important open problems in fundamental physics. The large cosmological volume at $2 < z < 5$, together with the ability to efficiently target high-$z$ galaxies with known techniques, enables large gains in the study of Inflation and Dark Energy. A future spectroscopic survey can test the Gaussianity of the initial conditions up to a factor of ~50 better than our current bounds, crossing the crucial theoretical threshold of $\sigma(f_{NL}^{\rm local})$ of order unity that separates single field and multi-field models. Simultaneously, it can measure the fraction of Dark Energy at the percent level up to $z = 5$, thus serving as an unprecedented test of the standard model and opening up a tremendous discovery space.

Mots clés: expansion: acceleration; dark energy; inflation; boundary condition; cosmological model; non-Gaussianity; galaxy

Domaines: Astrophysique [astro-ph]

Simone Ferraro, Michael J. Wilson, Muntazir Abidi, David Alonso, Behzad Ansarinejad, et al.. Inflation and Dark Energy from Spectroscopy at $z > 2$. Bull.Am.Astron.Soc., 2019, 51 (3), pp.72. ⟨hal-02116530⟩