Early-Universe Model Building

Pouya Asadi, Saurabh Bansal, Asher Berlin, Raymond T. Co, Djuna Croon, Yanou Cui, David Curtin, Francis-Yan Cyr-Racine, Hooman Davoudiasl, Luigi Delle Rose, Jeff A. Dror, Gilly Elor, Oliver Gould, Keisuke Harigaya, Saniya Heeba, Yonit Hochberg, Anson Hook, Seyda Ipek, Eric Kuflik, Andrew J. Long, Robert McGehee, Nadav Joseph Outmezguine, Giuliano Panico, Vivian Poulin, Josef Pradler, Katelin Schutz, Nausheen R. Shah, Bibhushan Shakya, Michael Shamma, Brian Shuve, Juri Smirnov, Yuhsin Tsai, Jessica Turner, Jorinde van de Vis, Christopher B. Verhaaren, Neal Weiner, Masaki Yamada, Tevong You, Hai-Bo Yu

Read on arXiv

arXiv

2203.06680

Date

2022-03-13

Frontier

Theory Frontier (TF)

Topical groups

Submitted by

Keisuke Harigaya

Abstract

Theoretical investigations into the evolution of the early universe are an essential part of particle physics that allow us to identify viable extensions to the Standard Model as well as motivated parameter space that can be probed by various experiments and observations. In this white paper, we review particle physics models of the early universe. First, we outline various models that explain two essential ingredients of the early universe (dark matter and baryon asymmetry) and those that seek to address current observational anomalies. We then discuss dynamics of the early universe in models of neutrino masses, axions, and several solutions to the electroweak hierarchy problem. Finally, we review solutions to naturalness problems of the Standard Model that employ cosmological dynamics.