Cosmological Inflationary Models

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    Cosmological Models
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SUMMARY

The discussion focuses on various cosmological inflationary models, specifically highlighting the Steinhardt-Turok cyclic model and Kaluza-Klein theory. While Kaluza-Klein is primarily a unification attempt rather than a cosmological model, the cyclic model is an extension of the Ekpyrotic Universe. Other notable models include the Pre Big Bang model by Gasperini and Veniziano, and string/brane gas models developed by Tseytlin & Vafa and Brandenberger & Vafa. The conversation also seeks information on non-eternal inflation models that do not perpetuate indefinitely.

PREREQUISITES
  • Understanding of the Steinhardt-Turok cyclic model
  • Familiarity with Kaluza-Klein theory
  • Knowledge of the Ekpyrotic Universe concept
  • Basic principles of string theory and brane cosmology
NEXT STEPS
  • Research non-eternal inflation models in cosmology
  • Explore the Pre Big Bang model by Gasperini and Veniziano
  • Study string/brane gas models from Tseytlin & Vafa and Brandenberger & Vafa
  • Investigate the implications of braneworld cosmology on the universe's evolution
USEFUL FOR

Astronomy students, theoretical physicists, and cosmologists interested in advanced cosmological models and the dynamics of the early universe.

cansay27
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I am doing a project in school and am looking up different cosmological models to research. I have found Steinhardt Turok Model, Kaluza Klein. I know these are not the best models, so I was wondering if there are any more specific models that I can look into.
 
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Kaluza Klein is not a cosmological model per se -- it's an attempt at unifying the gravitational and electromagnetic force using extra dimensions.

Braneworld cosmology is a rather large area: Steinhardt and Turok's cyclic model is based on braneworlds -- in fact, it's an extension on the Ekpyrotic Universe. There are several other kinds of 'bouncing' or 'oscillating' universe models -- some based on branes some not. The Pre Big Bang model of Gasperini and Veniziano is a string theory-inspired bounce model. But these are not inflation models.

There are string/brane gas models, in which the early universe is postulated to have passed through a thermodynamic string/brane gas phase. Early developments are in papers by Tseytlin & Vafa and Brandenberger & Vafa.

Inflation is another general class of early universe theories. There are several different classes of inflation models, but perhaps the broadest distinction can be made between 'eternal' and non-eternal inflation.
 
Yes, I was hoping to find more information regarding any non-eternal models, any that do not cycle on forever. Also, if a reason for why the model or theory or whatever it may be is not more widely regarded.
 

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