A plausible upper limit on the number of e-foldings
Bin Wang, Elcio Abdalla
TL;DR
This paper derives a theoretical upper limit on the number of e-foldings during cosmic inflation using the Friedmann equation and Cardy formula, applicable to standard and Randall-Sundrum cosmologies.
Contribution
It introduces a novel bound on inflationary e-foldings based on fundamental cosmological and holographic principles.
Findings
Derived an upper limit for e-foldings in standard cosmology
Extended the bound to Randall-Sundrum-type models
Provides a theoretical constraint relevant for inflation models
Abstract
Based solely on the arguments relating Friedmann equation and the Cardy formula we derive a bound for the number of e-folds during inflation for a standard Friedmann-Robertson-Walker as well as non-standard four dimensional cosmology induced by a Randall-Sundrum-type model.
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