Studies on Some Aspects of the Physics of the Early Universe Using Gravitationally Coupled Scalar Field –

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Studies on Some Aspects of the Physics of the Early Universe Using Gravitationally Coupled Scalar Field –

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Title: Studies on Some Aspects of the Physics of the Early Universe Using Gravitationally Coupled Scalar Field –
Author: Minu,Joy; Kuriakose,V C
Abstract: This thesis deals with some aspects of the Physics of the early universe, like phase transitions, bubble nucleations and premodial density perturbations which lead to the formation structures in the universe. Quantum aspects of the gravitational interaction play an essential role in retical high-energy physics. The questions of the quantum gravity are naturally connected with early universe and Grand Unification Theories. In spite of numerous efforts, the various problems of quantum gravity remain still unsolved. In this condition, the consideration of different quantum gravity models is an inevitable stage to study the quantum aspects of gravitational interaction. The important role of gravitationally coupled scalar field in the physics of the early universe is discussed in this thesis. The study shows that the scalar-gravitational coupling and the scalar curvature did play a crucial role in determining the nature of phase transitions that took place in the early universe. The key idea in studying the formation structure in the universe is that of gravitational instability.
URI: http://dyuthi.cusat.ac.in/purl/8
Date: 2003


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