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Weyl transverse gravity (WTDiff) and the cosmological constant

AuthorsÁlvarez-Vázquez, Enrique ; Vidal, Roberto
Issue Date2-Feb-2010
AbstractScale invariant (transverse) gravitational theories are introduced. They are invariant under pure metric rescalings (i.e. the matter fields are inert under those). This symmetry forbids the presence of a cosmological constant. Those theories are not invariant under the full set of diffeomorphisms, but only with respect to those locally characterized by the fact that their generator is transverse $\pd_\a \xi^\a=0$.
Description11 pages.
Publisher version (URL)http://arxiv.org/abs/1001.4458
Appears in Collections:(IFT) Artículos
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