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- W1597458085 abstract "A Weyl geometric approach to cosmology is explored, with a scalar field φ of (scale) weight −1 as crucial ingredient besides classical matter. Its relation to Jordan-Brans-Dicke theory is analyzed; overlap and differences are discussed. The energy-stress tensor of the basic state of the scalar field consists of a vacuum-like term Λg μ ν with Λ depending on the Weylian scale connection and, indirectly, on matter density. For a particularly simple class of Weyl geometric models (called Einstein-Weyl universes) the energy-stress tensor of the φ-field can keep space-time geometries in equilibrium. A short glance at observational data, in particular supernovae Ia (Riess et al. in Astrophys. J. 659:98ff, 2007), shows encouraging empirical properties of these models." @default.
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- W1597458085 date "2008-12-03" @default.
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- W1597458085 title "Cosmological Spacetimes Balanced by a Weyl Geometric Scale Covariant Scalar Field" @default.
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- W1597458085 doi "https://doi.org/10.1007/s10701-008-9261-x" @default.
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