Slowly rotating perfect-fluid universes coupled with zero-mass scalar field

Details Slowly rotating perfect-fluid universes coupled with zero-mass scalar field Slowly rotating perfect-fluid universes coupled with zero-mass scalar field

Nov 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.161..111k&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 161, no. 1, Nov. 1989, p. 111-123.

Statistics

Computation

2

Computational Astrophysics, Cosmology, Ideal Fluids, Rotation, Universe, Field Theory (Physics), Gravitational Fields, Mass, Scalars

Scientific paper

Certain new analytic solutions for rotating perfect-fluid spheres in the Robertson-Walker universe are found out to substantiate the possibility of the existence of rotating cosmological objects coupled with zero-mass scalar field. Exact solutions for the metric rotation Omega(r,t) and the matter rotation Omega(r,t) under different conditions are obtained and their nature and role are investigated. Except for perfect dragging the scalar field is found to have a damping effect on the rotation of matter. Rotating models which can also be expanding are also obtained, in which case the rotational velocities are found to decay with the time; and these models may be taken as examples of real astrophysical objects in the universe.

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