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Inflation and String Theory
Daniel Baumann,Liam McAllister +1 more
TLDR
In this paper, the authors present the foundations of effective field theory, string theory, and string compactifications, setting the stage for a detailed examination of models of inflation in string theory.Abstract:
The past two decades have seen transformative advances in cosmology and string theory. Observations of the cosmic microwave background have revealed strong evidence for inflationary expansion in the very early universe, while new insights about compactifications of string theory have led to a deeper understanding of inflation in a framework that unifies quantum mechanics and general relativity. Written by two of the leading researchers in the field, this complete and accessible volume provides a modern treatment of inflationary cosmology and its connections to string theory and elementary particle theory. After an up-to-date experimental summary, the authors present the foundations of effective field theory, string theory, and string compactifications, setting the stage for a detailed examination of models of inflation in string theory. Three appendices contain background material in geometry and cosmological perturbation theory, making this a self-contained resource for graduate students and researchers in string theory, cosmology, and related fields.read more
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The Swampland: Introduction and Review
TL;DR: The Swampland program aims to distinguish effective theories which can be completed into quantum gravity in the ultraviolet from those which cannot as mentioned in this paper, assuming only a knowledge of quantum field theory and general relativity.
Journal ArticleDOI
Dynamical systems applied to cosmology: dark energy and modified gravity
Sebastian Bahamonde,Christian G. Böhmer,Sante Carloni,Edmund J. Copeland,Wei Fang,Nicola Tamanini,Nicola Tamanini,Nicola Tamanini +7 more
TL;DR: In this paper, a comprehensive and detailed study of dynamical systems applications to cosmological models focusing on the late-time behaviour of our Universe, and in particular on its accelerated expansion is presented.
The first three minutes. A modern view of the origin of the universe
TL;DR: The giant and the cow, the expansion of the universe, and the Cosmic Microwave Radiation Background have been studied in this article, with a focus on the first three minutes of the first one hundredth second of the year.
Journal ArticleDOI
The effective field theorist’s approach to gravitational dynamics
TL;DR: In this article, effective field theory (EFT) was used for the study of cosmological large-scale structures, focusing on extended objects in long-wavelength backgrounds and gravitational wave emission from spinning binary systems.
Journal ArticleDOI
Non-Gaussianity as a Particle Detector
TL;DR: In this article, the imprints of massive particles with spin on cosmological correlators were studied using the framework of the effective field theory of inflation, and the couplings of these particles to the Goldstone boson of broken time translations and the graviton were classified.
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