primordial non gaussianity

• DOI: 10.3254/enfi200009
• Publication Date: 2019-01-01
• Authors: Alexander van Eng...; Daniel Baumann; Paolo de Bernardis; Peter Timbie; Gustavo Niz; Tzu-Ching Chang; Marilena LoVerde; Elisa Chisari; Jean-Paul Kneib; Ofer Lahav; M. Tomasi; Kevin Bandura; Christian T. Byrnes; Massimiliano Latt...; Yi Zheng; David Alonso; B. D. Sherwin; P. Daniel Meerburg; Hiranya V. Peiris; Anze Slosar; Mario Ballardini; Asantha Cooray; Florian Beutler; Jeff McMahon; C. Umiltà; Misao Sasaki; Michele Liguori; Daniel Green; Alexander Eggemeier; Joel Meyers; Shaul Hanany; Hee-Jong Seo; Andrew J. Tolley; Mustafa A. Amin; Levon Pogosian; Jonathan Blazek; Yi Wang; Mathieu Remazeilles; William H. Kinney; Hamsa Padmanabhan; Simone Ferraro; B. Racine; Guido D'Amico; Tobias Baldauf; Cliff Burgess; Renée Hložek; Eva Silverstein; Xingang Chen; Mark Wise; Marc Kamionkowski; Oliver Friedrich; M.C. David Marsh; Cora Uhlemann; C. Pryke; Huanyuan Shan; Ely D. Kovetz; Federico Nati; François R. Bouchet; Leonardo Senatore; Philip Bull; Kazuya Koyama; Stephanie Escoffier; Kiyoshi Masui; Alberto Nicolis; Colin A. Bischoff; Francis-Yan Cyr-R...; Adam J. Hawken; Giuseppe Puglisi; Savvas M. Koushia...; Jonás Chaves-Montero; J. Colin Hill; Marco Raveri; Michael Zemcov; W. L. K. Wu; Siavash Yasini; Julian Borrill; Axel de la Macorra; Peter Adshead; Benjamin Wallisch; Matteo Fasiello; Thomas Essinger-H...; Gong-Bo Zhao; Ryan E. Keeley; Emanuele Castorina; Raphael Flauger; Adri Duivenvoorden; Garrett Goon; Nikhel Gupta; E. Calabrese; Anthony Challinor; Azadeh Moradinezh...; Lloyd Knox; Carlo Baccigalupi; Juan Garcia-Bellido; Emmanuel Schaan; Liam McAllister; Sarah Shandera; J. Richard Bond; Matias Zaldarriaga; Matthew McQuinn; T. M. Crawford; Mathew S. Madhava...; Krzysztof M. Gorski; Mark Trodden; Hayden Lee; Abigail G. Vieregg; Nicholas Battaglia; Santiago Avila; Andrei Nomerotski; Muntazir Abidi; Radek Stompor; Enrico Pajer; Graziano Rossi; Newburgh; Suvodip Mukherjee; Matthieu Tristram; Benjamin L'Huillier; Albert Stebbins; Christophe Yèche; Robert Armstrong; Michael D. Niemack; Martina Gerbino; Ashley J. Ross; Jon E. Gudmundsson; Cora Dvorkin; Behzad Ansarinejad; Pavel Naselsky; Matteo Biagetti; Mariana Vargas-Ma...; William R. Coulton; Sam Young; Adam D. Myers; Guilherme L. Pime...; Yu-Dai Tsai; Neelima Sehgal; Scott Watson; Benjamin D. Wandelt; Lyman A. Page; Marcel Schmittfull; Theodore Kisner; John Ruhl; Sara M. Simon; Dragan Huterer; Zhong-Zhi Xianyu; Glenn Starkman; Will J. Percival; José Luis Bernal; Julian B. Muñoz; Will Handley; Joanna Dunkley; David Wands; Alessandro Schillaci; Sabino Matarrese; Weishuang Xu; Graca Rocha; Mehrdad Mirbabayi; Kirit Karkare; Francesco Piacentni; Nicola Bartolo; Chanda Prescod-We...; Aritoki Suzuki; Duan Yutong; J. M. Nagy; Z. Ahmed; Eric R. Switzer; Chetan Bavdhankar; Ningfeng Zhu; Suzanne T. Staggs; Andreu Font-Ribera; Simon Foreman; Christopher M. Hi...; O. Doré; Vera Gluscevic; John E. Carlstrom; Juan Maldacena; Pavel Motloch; Gonzalo A. Palma; Gilbert Holder
• Keywords: High Energy Physics - Theory; Cosmology and Nongalactic Astrophysics (astro-ph.CO); High Energy Physics - Theory (hep-th); hep-th; astro-ph.CO; FOS: Physical sciences; Astrophysics - Cosmology and Nongalactic Astrophysics

Our current understanding of the Universe is established through the pristine measurements of structure in the cosmic microwave background (CMB) and the distribution and shapes of galaxies tracing the large scale structure (LSS) of the Universe. One key ingredient that underlies cosmological observables is that the field that sources the observed structure is assumed to be initially Gaussian with high precision. Nevertheless, a minimal deviation from Gaussianityis perhaps the most robust theoretical prediction of models that explain the observed Universe; itis necessarily present even in the simplest scenarios. In addition, most inflationary models produce far higher levels of non-Gaussianity. Since non-Gaussianity directly probes the dynamics in the early Universe, a detection would present a monumental discovery in cosmology, providing clues about physics at energy scales as high as the GUT scale.<br/>5 pages + references; Submitted to the Astro2020 call for science white papers. This version: fixed author list<br/>