General Relativity and Gravitation

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

From quantum fluctuations to large-scale structures

  • Jai-chan Hwang


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.


Differential Geometry Early Universe Linear Process Quantum Fluctuation Acceleration Phase 
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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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