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Teoreticheskaya i Matematicheskaya Fizika, 2012, Volume 170, Number 2, Pages 223–229
DOI: https://doi.org/10.4213/tmf6760 (Mi tmf6760) 		 
Can broken rotational invariance be reconciled with inflation?

M. Peloso

School of Physics and Astronomy, University of Minnesota, Minneapolis, MN, USA
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DOI: https://doi.org/10.4213/tmf6760
Abstract: Motivated by claims of broken rotational invariance in the WMAP data, a number of models have appeared in the literature realizing this effect through vector field(s) with a nonvanishing spatial vacuum expectation value. We discuss why many such models have ghost instabilities.
Keywords: broken rotational invariance, ghost instability.
Received: 12.02.2012
English version:
Theoretical and Mathematical Physics, 2012, Volume 170, Issue 2, Pages 181–186
DOI: https://doi.org/10.1007/s11232-012-0019-4
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: M. Peloso, “Can broken rotational invariance be reconciled with inflation?”, TMF, 170:2 (2012), 223–229; Theoret. and Math. Phys., 170:2 (2012), 181–186
Citation in format AMSBIB
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