Evolution of the Universe through the Planck epoch

  title={Evolution of the Universe through the Planck epoch},
  author={C. Sivaram},
  journal={Astrophysics and Space Science},
  • C. Sivaram
  • Published 1 August 1986
  • Physics
  • Astrophysics and Space Science
The problem of the Universe emerging out of the Planck epoch is discussed. It is pointed out that an earlier exponential expansion phase well before the onset of the GUTs phase transition is essential. Such an expansion can occur owing to the breaking of scale invariance at Planck energies in a unified theory of gravity with other interactions. 

Some consequences of quadratic gravity for the early universe

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Torsion and the cosmological constant problem

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Energy enigmas in the early Universe and related problems in Newtonian cosmology

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Nonlinear curvature Lagrangians and extended inflation in the early universe

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Mond, dark matter and the cosmological constant

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Planckian pre big bang phase of the Universe

The standard model of cosmology, although very successful, has problems with the very initial phase, such as the existence of a singularity when the density and curvature becomes infinite. In this

String tension and fundamental constants in the early Universe

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Torsion and inflation

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Some enigmatic aspects of the early universe

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Towards a unification of the parameters underlying elementary particles and cosmology

It is pointed out that the gross parameters characterizing the Universe such as the overall size and mass can be arrived at from microphysical considerations involving the fundamental interactions of

A general upper limit on the mass and entropy production of a cluster of supermassive objects

The recent discovery of a distortion in the 3K spectrum of the black-body background cosmic radiation has led to suggestions that a part or even all of the radiation was generated by pregalactic