2026-09-24T14:45:01Zhttps://api.repository.cam.ac.uk/server/oai/requestoai:www.repository.cam.ac.uk:1810/2510382023-12-22T13:03:51Zcom_1810_205871com_1810_256064col_1810_206446
Properties of expanding universes
10.17863/CAM.11283
Hawking, Stephen W
000000029079593X
Sciama, D
Some implications and consequences of the expansion of the universe are examined. In Chapter 1 it is shown that this expansion creates grave difficulties for the Hoyle-Narlikar theory of gravitation. Chapter 2 deals with perturbations of an expanding homogeneous and isotropic universe. The conclusion is reached that galaxies cannot be formed as a result of the growth of perturbations that were initially small. The propagation and absorption of gravitational radiation is also investigated in this approximation. In Chapter 3 gravitational radiation in an expanding universe is examined by a method of asymptotic expansions. The 'peeling off' behaviour and the asymptotic group are derived. Chapter 4 deals with the occurrence of singularities in cosmological models. It is shown that a singularity is inevitable provided that certain very general conditions are satisfied.
University of Cambridge
1966-03-15
Thesis
Doctoral
Doctor of Philosophy (PhD)
eng
https://www.repository.cam.ac.uk/handle/1810/251038
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gravity