Asymptotically Safe Inflation

Abstract

Inflation is studied in the context of asymptotically safe theories of gravitation. Conditions are explored under which it is possible to have a long period of nearly exponential expansion that eventually comes to an end.

17 pages. An added footnote discusses the problem of ghost poles in these theories, and an added section applies the general results of the paper to actions with no more than four spacetime derivatives. Version accepted for publication in Physical Review D.

References in corpus (10)

• Five-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• Asymptotic safety in higher-derivative gravity
• Fixed Points of Higher Derivative Gravity
• Ultraviolet properties of f(R)-Gravity
• On the renormalization group flow of f(R)-gravity
• Taming perturbative divergences in asymptotically safe gravity
• The Nonperturbative Quantum de Sitter Universe
• The role of Background Independence for Asymptotic Safety in Quantum Einstein Gravity
• Fixed Points of Nonlinear Sigma Models in d>2
• Primordial Entropy Production and Lambda-driven Inflation from Quantum Einstein Gravity

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