학술논문
Primordial Non-Gaussianity
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article
Author
Meerburg, P Daniel; Green, Daniel; Abidi, Muntazir; Amin, Mustafa A; Adshead, Peter; Ahmed, Zeeshan; Alonso, David; Ansarinejad, Behzad; Armstrong, Robert; Avila, Santiago; Baccigalupi, Carlo; Baldauf, Tobias; Ballardini, Mario; Bandura, Kevin; Bartolo, Nicola; Battaglia, Nicholas; Baumann, Daniel; Bavdhankar, Chetan; Bernal, José Luis; Beutler, Florian; Biagetti, Matteo; Bischoff, Colin; Blazek, Jonathan; Bond, J Richard; Borrill, Julian; Bouchet, François R; Bull, Philip; Burgess, Cliff; Byrnes, Christian; Calabrese, Erminia; Carlstrom, John E; Castorina, Emanuele; Challinor, Anthony; Chang, Tzu-Ching; Chaves-Montero, Jonas; Chen, Xingang; Yeche, Christophe; Cooray, Asantha; Coulton, William; Crawford, Thomas; Chisari, Elisa; Cyr-Racine, Francis-Yan; D'Amico, Guido; de Bernardis, Paolo; de la Macorra, Axel; Doré, Olivier; Duivenvoorden, Adri; Dunkley, Joanna; Dvorkin, Cora; Eggemeier, Alexander; Escoffier, Stephanie; Essinger-Hileman, Tom; Fasiello, Matteo; Ferraro, Simone; Flauger, Raphael; Font-Ribera, Andreu; Foreman, Simon; Friedrich, Oliver; Garcia-Bellido, Juan; Gerbino, Martina; Gluscevic, Vera; Goon, Garrett; Gorski, Krzysztof M; Gudmundsson, Jon E; Gupta, Nikhel; Hanany, Shaul; Handley, Will; Hawken, Adam J; Hill, J Colin; Hirata, Christopher M; Hložek, Renée; Holder, Gilbert; Huterer, Dragan; Kamionkowski, Marc; Karkare, Kirit S; Keeley, Ryan E; Kinney, William; Kisner, Theodore; Kneib, Jean-Paul; Knox, Lloyd; Koushiappas, Savvas M; Kovetz, Ely D; Koyama, Kazuya; L'Huillier, Benjamin; Lahav, Ofer; Lattanzi, Massimiliano; Lee, Hayden; Liguori, Michele; Loverde, Marilena; Madhavacheril, Mathew; Maldacena, Juan; Marsh, MC David; Masui, Kiyoshi; Matarrese, Sabino; McAllister, Liam; McMahon, Jeff; McQuinn, Matthew; Meyers, Joel; Mirbabayi, Mehrdad; Dizgah, Azadeh Moradinezhad
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Abstract
Our current understanding of the Universe is established through the pristinemeasurements of structure in the cosmic microwave background (CMB) and thedistribution and shapes of galaxies tracing the large scale structure (LSS) ofthe Universe. One key ingredient that underlies cosmological observables isthat the field that sources the observed structure is assumed to be initiallyGaussian with high precision. Nevertheless, a minimal deviation fromGaussianityis perhaps the most robust theoretical prediction of models thatexplain the observed Universe; itis necessarily present even in the simplestscenarios. In addition, most inflationary models produce far higher levels ofnon-Gaussianity. Since non-Gaussianity directly probes the dynamics in theearly Universe, a detection would present a monumental discovery in cosmology,providing clues about physics at energy scales as high as the GUT scale.