Bianchi type I cosmological models in higher dimensions
- Jadavpur Univ., Calcutta (India)
In the present paper, Krori and Barua's (1987) work on Bianchi type I solutions in (9 + 1)-dimensional spacetime has been extended for viscous as well as perfect fluid in general (D + 1) dimensions. The Hubble functions are expressed in terms of the ratio (sigma-squared/theta-squared), and explicit solutions are obtained in several special cases for viscous fluid involving both bulk and shear viscosities. The perfect fluid with the equation of state p = rho is also discussed in (D + 1) dimensions and is found to have properties of dimensional reduction analogous to those in vacuum found by Krori and Barua. It is further observed that effective four-dimensional entropy would considerably increase if rapid contraction of extra dimensions takes place. 12 refs.
- OSTI ID:
- 6593371
- Journal Information:
- Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 358; ISSN ASJOA; ISSN 0004-637X
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
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EINSTEIN FIELD EQUATIONS
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FLUID FLOW
FLUIDS
IDEAL FLOW
MANY-DIMENSIONAL CALCULATIONS
MATHEMATICAL MODELS
PHYSICAL PROPERTIES
SPACE-TIME
THERMODYNAMIC PROPERTIES