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A few cosmological implications of tensor nonlocalities

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Ferreira, Pedro G. and López Maroto, Antonio (2013) A few cosmological implications of tensor nonlocalities. Physical Review D, 88 (12). ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.88.123502


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http://journals.aps.org/Publisher


Abstract

We consider nonlocal gravity theories that include tensor nonlocalities. We show that in the cosmological context, the tensor nonlocalities, unlike scalar ones, generically give rise to growing modes. An explicit example with quadratic curvature terms is studied in detail. Possible consequences for recent nonlocal cosmological models proposed in the literature are also discussed.


Item Type:Article
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© 2013 American Physical Society. We are extremely grateful to R. Woodard for his advice and guidance and to Tessa Baker, Joe Conlon, and Johannes Noller for discussions. P. G. F. acknowledges support from Leverhulme, STFC, BIPAC, and the Oxford Martin School and the hospitality of the Higgs Centre in Edinburgh while this paper was being completed. A. L. M. acknowledges support from MICINN (Spain) Projects No. FIS2011-23000 and Consolider-Ingenio MULTIDARK No. CSD2009-00064, the Salvador de Madariaga program, and the hospitality of Oxford BIPAC.

Uncontrolled Keywords:Covariant perturbation-theory, Quantum-gravity, Dark energy, Field, Inflation, 2nd-order, Anomalies, Constant, Photons, Models
Subjects:Sciences > Physics
ID Code:27407
Deposited On:25 Nov 2014 13:07
Last Modified:25 Nov 2014 13:07

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