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


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.


Entropy Phase Transition General Relativity Gibbs Energy Differential Geometry 
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Copyright information

© Plenum Publishing Corporation 1987

Authors and Affiliations

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

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