Physics of the universe / Mendel Sachs.

Includes bibliographical references and index.

Physics of the universe -- The language of cosmology: the mathematical basis of general relativity -- A unified field theory in general relativity: extension from the tensor to the quaternion language -- An oscillating, spiral universe cosmology -- Dark matter -- Concluding remarks -- Philosophical considerations.

This book presents a new approach to the subject of cosmology. It fully exploits Einstein's theory of general relativity. It is found that the most general formal expression of the theory replaces the (10-component) tensor formalism with a (16-component) quaternion formalism. This leads to a unified field theory, where one field incorporates gravitation and electromagnetism. The theory predicts an oscillating universe cosmology with a spiral configuration. Dark matter is explained in terms of a sea of particle-antiparticle pairs, each in a particular (derived) ground state. This leads to an explanation for the separation between matter and antimatter in the universe. There is a brief discussion of black holes and pulsars. The final chapter delves into philosophical considerations such as the different types of 'truth', positivism versus realism and a discussion of the role of the Mach principle in physics and cosmology.

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