Verständnis von Infrarotdivergenzen im de Sitter-Raum mithilfe von effektiven Feldtheorien

mediaTUM (Technical University of Munich) 2026 Thesis Open access

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Authors: Andrea F. Sanfilippo
Cited by: 0

Abstract

In this thesis, the infrared dynamics of the real, massless, minimally coupled scalar field in de Sitter space is studied, with a focus on effective-field-theory approaches. The two-point function of the field is studied using Stochastic Inflation and the Euclidean formulation of the quantum theory. The method of regions is introduced to simplify the computation of late-time correlation functions. The quantum-field- theoretic formulation of the Soft de Sitter Effective Theory is developed.

Fields of Study & Subjects

Cosmology and Gravitation Theories Noncommutative and Quantum Gravity Theories Black Holes and Theoretical Physics

Publication details

Journal / source
mediaTUM (Technical University of Munich)
Publication date
2 February 2026
Language
EN
Document type
Thesis