Snowmass White Paper: Effective Field Theories in Cosmology

Autor:	Cabass, Giovanni, Ivanov, Mikhail M., Lewandowski, Matthew, Mirbabayi, Mehrdad, Simonović, Marko
Rok vydání:	2022
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory
Druh dokumentu:	Working Paper
Popis:	Small fluctuations around homogeneous and isotropic expanding backgrounds are the main object of study in cosmology. Their origin and evolution is sensitive to the physical processes that happen during inflation and in the late Universe. As such, they hold the key to answering many of the major open questions in cosmology. Given a large separation of relevant scales in many examples of interest, the most natural description of these fluctuations is formulated in terms of effective field theories. This was the main avenue for many of the important modern developments in theoretical cosmology, which provided a unifying framework for a plethora of cosmological models and made a clear connection between the fundamental cosmological parameters and observables. In this review we summarize these results in the context of effective field theories of inflation, large-scale structure, and dark energy. Comment: Contribution to Snowmass 2021
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2203.08232 Zobrazit plný text záznamu View this record from Arxiv