Weyl transverse gravity (WTDiff) and the cosmological constant
Jan, 2010
11 pages
Published in:
- Phys.Rev.D 81 (2010) 084057
e-Print:
- 1001.4458 [hep-th]
Report number:
- IFT-UAM-CSIC-10-01,
- FTUAM-10-01
View in:
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Abstract: (arXiv)
Scale 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.- gravitation: action
- effective Lagrangian
- cosmological constant
- dimension: 0
- dimension: 2
- invariance: conformal
- scaling
- field equations
- current: Noether
- 04.50.Kd
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