http://arxiv.org/abs/1609.08507
We show that the effective theory describing single component continuous media with a linear and constant equation of state of the form $p=w\rho$ is invariant under a 1-parameter family of continuous disformal transformations. In the special case of $w=1/3$ (ultrarelativistic gas), such a family reduces to conformal transformations. As examples, perfect fluids, homogeneous and isotropic solids are discussed.
M. Celoria, S. Matarrese and L. Pilo
Wed, 28 Sep 16
23/60
Comments: latex, 7 pages
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