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General Relativity and Gravitation

, Volume 26, Issue 3, pp 299–306 | Cite as

From quantum fluctuations to large-scale structures

  • Jai-chan Hwang
Article

Abstract

An acceleration phase in the early universe allows microscopic quantum fluctuations inside a causal domain to expand into macroscopic ripples in the spacetime metric. These, in turn, can evolve into large-scale structures in the universe. After its generation from quantum fluctuations, a ripple in the metric spends a long period outside the causal domain where its evolution is characterized by a conserved amplitude, a fact closely related to the large-scale Friedmann-like evolution of the perturbed Friedmann universe. We show that, under the assumption of linear processes, the generation and evolution of large-scale structures can be described quite simply.

Keywords

Differential Geometry Early Universe Linear Process Quantum Fluctuation Acceleration Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • Jai-chan Hwang
    • 1
  1. 1.Korea Astronomy ObservatoryDaejonRepublic of Korea

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