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1	ΛCDM Cosmology + Chaotic Inflation Farago, Peter A 01 January 2015 (has links) ΛCDM cosmology is described in terms of general relativity and the Robertson-Walker metric. The evolution of the observable universe, currently dominated by dark energy (Λ) and cold dark matter (CDM), is presented in terms of its thermal history. CDM is extended to include an inflation epoch that accelerates the early expansion rate to near exponential levels. It is shown that inflation solves several problems in CDM and produces perturbations in the metric that lead to the observed anisotropies in the Cosmic Microwave Background and the formation of large scale cosmological structures. Various theories of inflation are explored. Predictions of inflation theories are compared to observations published by the Planck Collaboration. The paper concludes with an examination of “𝜶-attractor” theories of inflation based on a modified form of gravity. cosmology chaotic inflation general relativity Other Physics
2	The Inflationary Universe Cavcic, Benjamin January 2023 (has links) Astrophysical observations of the cosmic microwave background point to inconsistencies in the standard model of cosmology, and a primordial accelerated expansion of the universe known as inflation has been suggested as a solution. Unfortunately, observational evidence of inflation is lacking, and there exists hundreds of models that populate the inflationary landscape. In this thesis, we explore three of these and see what constraints are set on them in order to account for observations. We find that two of the models have regimes of trans-planckian nature, while the third leads to a non-invertible equation. / Astronomiska observationer av den kosmiska bakgrundsstrålningen tyder på bristfälligheter i standardkosmologin, vilket har lett till förslaget om en accelererande expansion i de tidigaste skeden av universum känd som inflation. I avsaknaden av observationella bevis finns det numera hundratals inflationsmodeller, och i detta arbete kommer vi att rikta fokuset mot tre av dessa avvilka två visar sig överstiga transplanckianska värden medan den sista leder till en ekvation som inte är inverterbar. general relativity inflation cosmology cosmic inflation chaotic inflation natural inflation eternal inflation valley hybrid inflation Astronomy, Astrophysics and Cosmology Astronomi, astrofysik och kosmologi
3	Radiative Corrections in Curved Spacetime and Physical Implications to the Power Spectrum and Trispectrum for different Inflationary Models Dresti, Simone 23 May 2018 (has links) No description available. 530 Physik (PPN621336750) Primordial Power Spectrum Trispectrum Inflationary Perturbations Inflaton Field Slow-Roll Inflation Hybrid Inflation Chaotic Inflation Non-Linearity Parameter De-Sitter Spacetime Renormalization in Curved Spacetime Radiative Corrections Finite Time Contributions CTP Formalism WKB Propagator Hypergeometric Propagator

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