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Title of Journal: Astrophys Space Sci

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Abbravation: Astrophysics and Space Science

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Springer Netherlands

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DOI

10.1007/s00107-009-0328-y

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1572-946X

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On the viability of a certain vectortensor theory

Authors: Roberto Dale Diego Sáez
Publish Date: 2011/09/11
Volume: 337, Issue: 1, Pages: 439-453
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Abstract

A certain vectortensor theory is revisited Our attention is focused on cosmology Against previous suggestions based on preliminary studies it is shown that if the energy density of the vector field is large enough to play the role of the dark energy and its fluctuations are negligible the theory is not simultaneously compatible with current observations on supernovae the cosmic microwave background CMB anisotropy and the power spectrum of the energy density fluctuations However for small enough energy densities of the vector field and no scalar fluctuations the theory becomes compatible with all the above observations and moreover it leads to an interesting evolution of the socalled vector cosmological modes This evolution appears to be different from that of general relativity and the difference might be useful to explain the anomalies in the low order CMB multipoles

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