General Relativity and Gravitation

, Volume 19, Issue 9, pp 899–906 | Cite as

Thermodynamics and general relativity could determine the geometry of the universe

  • Selçuk Ş. Bayin
Research Articles

Abstract

We introduce a suggestive model where certain quantities in Friedmann models are treated like their thermodynamic counterparts; temperature entropy, Gibbs energy, and so on. Within this model, changes in the symmetry of the universe are interpreted as first- or second-order phase transitions. The thermodynamics we introduce give us a new way of determining the geometry of the universe. By choosing a specific local equation of state (P=αρ), we show that with respect to the thermodynamics we have introduced, it is always more advantageous for the universe to be in a Bianchi V (open) symmetric state.

Keywords

Entropy Phase Transition General Relativity Gibbs Energy Differential Geometry 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Bekenstein, J. D. (1980).Phys. Today.Google Scholar
  2. 2.
    Bonnor, W. B. (1985).Phys. Lett. A.,112, 26.Google Scholar
  3. 3.
    Swalin, R. A. (1972).Thermodynamics of Solids (John Wiley & Sons, New York).Google Scholar
  4. 4.
    Tolman, R. C. (1934).Relativity, Thermodynamics and Cosmology (Oxford University Press, Oxford).Google Scholar
  5. 5.
    Dicke, R. H., and Peebles, J. E. (1964).Phys. Rev. Lett.,12, 435.Google Scholar
  6. 6.
    Gott, J. R. (1982).Nature,295, 304.Google Scholar
  7. 7.
    Steigman, G. (1985).Ann. Rev. Astron. Astrophys.,23, 319.Google Scholar
  8. 8.
    Bayin, S. Ş. (1987). Submitted toAp. J. Google Scholar
  9. 9.
    Weinberg, S. (1972).Gravitation and Cosmology (John Wiley & Sons, New York), 506.Google Scholar

Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

  • Selçuk Ş. Bayin
    • 1
  1. 1.Department of PhysicsCanisius CollegeBuffalo

Personalised recommendations