Perfect fluids: Field-theoretical description and gauge symmetry issue

Details Perfect fluids: Field-theoretical description and gauge symmetry issue Perfect fluids: Field-theoretical description and gauge symmetry issue

2010-06-21

arxiv.org/abs/1006.4130v1

Published in Gen. Relat. and Gravit. vol. 31, p. 713 (1999)

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

4 pages, no figures

Scientific paper

We show that combinations of (in general, non-linear) 2- and 3-form fields analogous to the Maxwell (1-form) field, completely describe perfect fluids, including the rotating ones. In the non-rotating case, the 2-form field in sufficient, and a free 3-form field proves to be equivalent to appearance of the cosmological term in Einstein's equations (the square-root non-linearity corresponding to $\Lambda=0$). The gauge degrees of freedom break down when a rotation is included, but even when they exist, there obviously fails to be realized an equivalence of the 2-form field and the massless scalar one recently claimed by Weinberg.

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