Models of inflation and their predictions
David H Lyth (Lancaster)

TL;DR
This paper discusses the challenges of inflation model-building within field theory and highlights how current observational data on the spectral index can distinguish between different models, potentially identifying a unique viable model.
Contribution
It emphasizes the importance of the spectral index in discriminating inflation models and explores the implications of field theory constraints on model-building.
Findings
Spectral index measurements can differentiate inflation models.
Field theory imposes constraints on viable inflation scenarios.
Future observations may identify a unique inflation model.
Abstract
Taking field theory seriously, inflation model-building is difficult but not impossible. The observed value of the spectral index of the adiabatic density perturbation is starting to discriminate between models, and may well pick out a unique one in the forseeable future.
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