Lemaître, the Big Bang and the Quantum Universe

  • Michael Heller
Part of the Astrophysics and Space Science Library book series (ASSL, volume 395)


Lemaître’s work on the geometric nature of singularities and his speculations concerning the applications of quantum physics to cosmology are confronted with later achievements in these fields. His works on the global structure of the de Sitter solution and the appearance of “non-regular” points in the Schwarzschild solution led to the conclusion that the “vanishing of the radius of the universe” is a generic property of cosmological models. This conclusion was strengthened when Lemaître proved that, against Einstein’s intuition, space anisotropy (in Bianchi I models) does not remove the singularity. This is why Lemaître regarded the initial singularity as a “geometric support” of his Primeval Atom hypothesis. This hypothesis was not yet a quantum gravity idea (in the present sense of this expression), but it was certainly an application of quantum physics to the early stages of cosmic evolution. The beginning itself is aspatial and atemporal, and both space and time emerge only when the simplicity of the Primeval Atom gives place to physical multiplicity. How do the problems with which Lemaître struggled appear in the light of the present state of cosmological research?


Quantum Gravity Singularity Theorem Null Geodesic World Model Cauchy Surface 
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© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Copernicus Center for Interdisciplinary StudiesKrakowPoland

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