Correlation Functions of Massless Interacting Scalar Fields in de Sitter Space
arXiv:1502.04412 · doi:10.1142/S0217751X15501730
Abstract
We examine the behavior of correlation functions for a massless scalar field in de Sitter space with a quartic interaction. We find that two-loop corrections are relevant, and that the resummation of these corrections generates a complicated structure whereby high momentum modes stay massless while low momentum modes develop a dynamical mass.
10 pages, references added
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- Fermionic influence (action) on inflationary fluctuations
- Quantum Weyl Invariance and Cosmology
- Towards a unitary formulation of quantum field theory in curved spacetime: the case of de Sitter spacetime
- Strongly Coupled Sectors in Inflation: Gapped Theories of Unparticles