Primordial Non-Gaussianity

P. Daniel Meerburg , Daniel Green , Muntazir Abidi , Mustafa A. Amin , Peter Adshead , Zeeshan Ahmed , David Alonso , Behzad Ansarinejad

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Robert Armstrong Santiago Avila Carlo Baccigalupi Tobias Baldauf Mario Ballardini Kevin Bandura Nicola Bartolo Nicholas Battaglia Daniel Baumann Chetan Bavdhankar Jos\'e Luis Bernal Florian Beutler Matteo Biagetti Colin Bischoff Jonathan Blazek J. Richard Bond Julian Borrill Fran\c{c}ois R. Bouchet Philip Bull Cliff Burgess Christian Byrnes Erminia Calabrese John E. Carlstrom Emanuele Castorina Anthony Challinor Tzu-Ching Chang Jonas Chaves-Montero Xingang Chen Christophe Yeche Asantha Cooray William Coulton Thomas Crawford Elisa Chisari Francis-Yan Cyr-Racine Guido D'Amico Paolo De Bernardis Axel de la Macorra Olivier Dor\'e Adri Duivenvoorden Joanna Dunkley Cora Dvorkin Alexander Eggemeier Stephanie Escoffier Tom Essinger-Hileman Matteo Fasiello Simone Ferraro Raphael Flauger Andreu Font-Ribera Simon Foreman Oliver Friedrich Juan Garcia-Bellido Martina Gerbino Vera Gluscevic Garrett Goon Krzysztof M. Gorski Jon E. Gudmundsson Nikhel Gupta Shaul Hanany Will Handley Adam J. Hawken J. Colin Hill Christopher M. Hirata Ren\'ee Hlo\v{z}ek Gilbert Holder Dragan Huterer Marc Kamionkowski Kirit S. Karkare Ryan E. Keeley William Kinney Theodore Kisner Jean-Paul Kneib Lloyd Knox Savvas M. Koushiappas Ely D. Kovetz Kazuya Koyama Benjamin L'Huillier Ofer Lahav Massimiliano Lattanzi Hayden Lee Michele Liguori Marilena Loverde Mathew Madhavacheril Juan Maldacena M.C. David Marsh Kiyoshi Masui Sabino Matarrese Liam McAllister Jeff McMahon Matthew McQuinn Joel Meyers Mehrdad Mirbabayi Azadeh Moradinezhad Dizgah Pavel Motloch Suvodip Mukherjee Julian B. Mu\~noz Adam D. Myers Johanna Nagy Pavel Naselsky Federico Nati Newburgh Alberto Nicolis Michael D. Niemack Gustavo Niz Andrei Nomerotski Lyman Page Enrico Pajer Hamsa Padmanabhan Gonzalo A. Palma Hiranya V. Peiris Will J. Percival Francesco Piacentni Guilherme L. Pimentel Levon Pogosian Chanda Prescod-Weinstein Clement Pryke Giuseppe Puglisi Benjamin Racine Radek Stompor Marco Raveri Mathieu Remazeilles Gracca Rocha Ashley J. Ross Graziano Rossi John Ruhl Misao Sasaki Emmanuel Schaan Alessandro Schillaci Marcel Schmittfull Neelima Sehgal Leonardo Senatore Hee-Jong Seo Huanyuan Shan Sarah Shandera Blake D. Sherwin Eva Silverstein Sara Simon An\v{z}e Slosar Suzanne Staggs Glenn Starkman Albert Stebbins Aritoki Suzuki Eric R. Switzer Peter Timbie Andrew J. Tolley Maurizio Tomasi Matthieu Tristram Mark Trodden Yu-Dai Tsai Cora Uhlemann Caterina Umilta Alexander van Engelen M. Vargas-Maga\~na Abigail Vieregg Benjamin Wallisch David Wands Benjamin Wandelt Yi Wang Scott Watson Mark Wise W. L. K. Wu Zhong-Zhi Xianyu Weishuang Xu Siavash Yasini Sam Young Duan Yutong Matias Zaldarriaga Michael Zemcov Gong-Bo Zhao Yi Zheng Ningfeng Zhu

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classification 🌌 astro-ph.CO hep-th

keywords universenon-gaussianitystructurehighmodelsobservedscaleaddition

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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.

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