Repository logo
  • English
  • Català
  • Čeština
  • Deutsch
  • Español
  • Français
  • Gàidhlig
  • Italiano
  • Latviešu
  • Magyar
  • Nederlands
  • Polski
  • Português
  • Português do Brasil
  • Suomi
  • Svenska
  • Türkçe
  • Қазақ
  • বাংলা
  • हिंदी
  • Ελληνικά
  • Yкраї́нська
  • Log In
    or
    New user? Click here to register.Have you forgotten your password?
Repository logo
  • Communities & Collections
  • Research Outputs
  • Fundings & Projects
  • People
  • Statistics
  • English
  • Català
  • Čeština
  • Deutsch
  • Español
  • Français
  • Gàidhlig
  • Italiano
  • Latviešu
  • Magyar
  • Nederlands
  • Polski
  • Português
  • Português do Brasil
  • Suomi
  • Svenska
  • Türkçe
  • Қазақ
  • বাংলা
  • हिंदी
  • Ελληνικά
  • Yкраї́нська
  • Log In
    or
    New user? Click here to register.Have you forgotten your password?
  1. Home
  2. Indian Institute of Technology Madras
  3. Publication12
  4. Cosmological models with constant deceleration parameter in Brans-Dicke theory
 
  • Details
Options

Cosmological models with constant deceleration parameter in Brans-Dicke theory

Date Issued
01-12-1994
Author(s)
Johri, V. B.
Desikan, Kalyani
DOI
10.1007/BF02106714
Abstract
A detailed study of cosmological models with constant deceleration parameter q is undertaken in the framework of Brans-Dicke theory. These models are divided into two categories: (i) singular models with expansion driven by big-bang impulse, (ii) non-singlar models with expansion driven by creation of matter particles. Prigogine's hypothesis of creation of matter out of gravitational energy is analysed and extended to BD cosmology. To accommodate the creation of new particles, the universe is regarded as an open thermodynamical system and the energy conservation equation is modified with the incorporation of a creation pressure term pc in the energy-momentum tensor {Mathematical expression}. The exact solutions of the field equations of BD theory with {Mathematical expression} are obtained using the power law relation Φ=KRα, which leads to models with constant q. The behaviour of the solutions is investigated for different range of values of a. The role played by the BD scalar field Φ and creation of matter particles in the expansion of the universe is investigated. It is found that one particular model with constant q has exponential expansion. © 1994 Plenum Publishing Corporation.
Volume
26
Indian Institute of Technology Madras Knowledge Repository developed and maintained by the Library

Built with DSpace-CRIS software - Extension maintained and optimized by 4Science

  • Cookie settings
  • Privacy policy
  • End User Agreement
  • Send Feedback