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An important proposal from cosmology is that the observed structure of the universe con-tains relics of topological defects formed as the early universe cooled. The important question of the density of defects was first treated theoretically by Kibble (1) using a model in which the phase transition proceeds by the
Mar 24, 2021 · Professor Tom Kibble was an internationally-renowned theoretical physicist whose contributions to theoretical physics range from the theory of elementary particles to modern early-Universe cosmology. The unifying theme behind all his work is the theory of non-abelian gauge theories, the Yang–Mills extension of electromagnetism.
- M. J. Duff, K. S. Stelle
- 2021
However, in cosmology, the transitions are driven by the Hubble expansion of the Universe, which proceeds at a finite rate outside our control. Causality arguments then require a certain minimum density of defects to be generated, the basis of what has come to be known as the Kibble– Zurek (KZ) mechanism (Kibble 1976; Zurek 1985).
The possibility of cosmic strings being produced in the early universe was first envisioned by quantum field theorist Tom Kibble in 1976, [1] and this sprouted the first flurry of interest in the field.
Peebles’s Physical Cosmology from 1971 was entirely different as it essentially identified cosmology with the new theory of an explosive beginning of the universe and its subsequent evolution governed by the laws of general relativity.
Cosmological arguments claim that God’s existence can be established as the required explanation of what exists. The typical version of the argument is a posteriori, beginning with observations of the world and then concluding that some first cause or necessary being is the only explanation of their origin.
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Feb 21, 2022 · Cosmology is a branch of astronomy that involves the origin and evolution of the universe, from the Big Bang to today and on into the future.
