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Unimodular gravity redux

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Álvarez, Enrique and González Martín, Sergio and Herrero Valea, Mario and Pérez Martín, Carmelo (2015) Unimodular gravity redux. Physical review D, 92 (6). ISSN 1550-7998

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Official URL: http://dx.doi.org/10.1103/PhysRevD.92.061502


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http://journals.aps.org/Publisher


Abstract

It is well known that the problem of the cosmological constant appears in a new light in unimodular gravity. In particular, the zero-momentum piece of the potential does not automatically produce a corresponding cosmological constant. Here we show that quantum corrections do not renormalize the classical value of this observable.


Item Type:Article
Additional Information:

© 2015 American Physical Society. We acknowledge useful discussions with A. O. Barvinsky and C. F. Steinwachs. This work has been partially supported by the European Union FP7 ITN INVISIBLES (Marie Curie Actions, PITN- GA-2011-289442, and HPRN-CT-200-00148) as well as by FPA2012-31880 (MICINN, Spain), FPA2011-24568 (MICINN, Spain), S2009ESP-1473 (CA Madrid), and COST Action MP1210 (The String Theory Universe). The authors acknowledge the support of the Spanish MINECO Centro de Excelencia Severo Ochoa Program under Grant No. SEV-2012-0249.

Uncontrolled Keywords:Quantum-gravity; Gauge-theories
Subjects:Sciences > Physics
ID Code:33857
Deposited On:30 Oct 2015 14:46
Last Modified:02 Nov 2015 14:37

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