Abstract
In an extension of a recent work by Bayin and Cooperstock, we investigate in this paper rotational perturbations of Friedmann universes in Einstein zero mass scalar theory. We find that except in the case of "perfect dragging", the zero mass scalar field has a damping effect on the rotation of matter. One of the three cases studied here shows that the scalar field may exist only during a certain interval in the course of the evolution of the universe. The zero mass scalar field has acquired particular importance recently because of a suggestion by Weinberg and Wilczek that there should exist a pseudo-scalar boson, the so-called axion, of negligible mass. The work of Peccei and Quinn has lent further support to the idea of axions.
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