How do E Folds relate to real distance?

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SUMMARY

E-folds provide a quantitative measure of the universe's expansion during inflation, specifically indicating that one e-fold corresponds to an expansion factor of approximately 2.71828. This means that all distances between comoving objects in the universe increase by this same factor during inflationary periods. The discussion highlights the relationship between e-folds and the growth of the horizon, emphasizing that while e-folds quantify expansion, their direct correlation to "real distance" remains ambiguous and requires further clarification.

PREREQUISITES
  • Understanding of cosmological inflation
  • Familiarity with the concept of comoving distance
  • Basic knowledge of exponential functions
  • Awareness of the significance of the number e (approximately 2.71828)
NEXT STEPS
  • Research the implications of cosmological inflation on the observable universe
  • Explore the concept of comoving distance in cosmology
  • Study the mathematical properties of exponential growth
  • Investigate the relationship between e-folds and horizon growth during inflation
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Astronomers, physicists, and students of cosmology seeking to understand the dynamics of the universe's expansion and the implications of inflationary theory.

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How do E Folds relate to real distance?
 
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e-folds number is giving you a measure of the expansion ...
I am not sure if they will in general relate to any real distance (what do you mean by real distance?)...maybe with the Horizon growth during inflation...
 
One "e-fold" means the universe has expanded by a factor of ##e## (the base of natural logarithms, 2.71828...), so all distances between comoving objects have increased by the same factor.
 
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