Planck scale operators, inflation and fine tuning
General Relativity and Quantum Cosmology
2017-08-23 v1 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
Ultraviolet completion of the standard model plus gravity at and beyond the Planck scale is a daunting problem to which no generally accepted solution exists. Principal obstacles include (a) lack of data at the Planck scale (b) nonrenormalizability of gravity and (c) unitarity problem. Here we make a simple observation that, if one treats all Planck scale operators of equal canonical dimension democratically, one can tame some of the undesirable features of these models. With a reasonable amount of fine tuning one can satisfy slow roll conditions required in viable inflationary models. That remains true even when the number of such operators becomes very large.
Keywords
Cite
@article{arxiv.1611.07898,
title = {Planck scale operators, inflation and fine tuning},
author = {Anja Marunovic and Tomislav Prokopec},
journal= {arXiv preprint arXiv:1611.07898},
year = {2017}
}
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9 pages, 0 figures