Fine tuning may not be enough

S. P. Miao, R. P. Woodard

研究成果: Article同行評審

19 引文 斯高帕斯(Scopus)

摘要

We argue that the fine tuning problems of scalar-driven inflation may be worse than is commonly believed. The reason is that reheating requires the inflaton to be coupled to other matter fields whose vacuum fluctuations alter the inflaton potential. The usual response has been that even more fine-tuning of the classical potential V(φ) can repair any damage done in this way. We point out that the effective potential in de Sitter background actually depends in a complicated way upon the dimensionless combination of φ/H. We also show that the factors of H which occur in de Sitter do not even correspond to local functionals of the metric for general geometries, nor are they Planck-suppressed.

原文English
文章編號022
期刊Journal of Cosmology and Astroparticle Physics
2015
發行號9
DOIs
出版狀態Published - 2015 九月 8

All Science Journal Classification (ASJC) codes

  • 天文和天體物理學

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