Homogeneous plane symmetric cosmic strings and domain walls are respectively in Rosen’s bimetric theory of relativity. As we know that, at the early stage of evolution of the universe domain walls as well as cosmic strings do appear which lead to formation of galaxies. Thus, it may be said that the bimetric relativity does not help to describe the early era of the universe. It is shown that the vacuum model represents Robertson-Walker flat metric which expands uniformly along space direction with time.

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Plane Symmetric Bimetric Relativity Cosmic Strings Domain Walls