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Abstract:

The present work suggests that the isocurvature tension between axion and high energy inflationary scenarios may be avoided by considering a double field inflationary model involving the hidden Peccei–Quinn Higgs and the Standard Model one. Some terms in the lagrangian we propose explicitly violate the Peccei–Quinn symmetry but, at the present era, their effect is completely negligible. The resulting mechanism allows for a large value for the axion constant, of the order fa∼ Mp, thus the axion isocurvature fluctuations are suppressed even when the scale of inflation Hinf is very high, of the order of Hinf∼ Mgut. This numerical value is typical in Higgs inflationary models. An analysis about topological defect formation in this scenario is also performed, and it is suggested that, under certain assumptions, their effect is not catastrophic from the cosmological point of view. © 2016, The Author(s).

Registro:

Documento: Artículo
Título:About the isocurvature tension between axion and high scale inflationary models
Autor:Estevez, M.; Santillán, O.
Filiación:CONICET-International Center for Advances Studies (ICAS), UNSAM, Campus Miguelete 25 de Mayo y Francia, Buenos Aires, 1650, Argentina
CONICET-Instituto de Física de Buenos Aires (IFIBA), Pabellón I Ciudad Universitaria, C. A. B. A, Buenos Aires, 1428, Argentina
CONICET-Instituto de Matemáticas Luis Santaló (IMAS), Pabellón I Ciudad Universitaria, C. A. B. A, Buenos Aires, 1428, Argentina
Año:2016
Volumen:76
Número:7
DOI: http://dx.doi.org/10.1140/epjc/s10052-016-4226-2
Título revista:European Physical Journal C
Título revista abreviado:Eur. Phys. J. C
ISSN:14346044
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v76_n7_p_Estevez

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Citas:

---------- APA ----------
Estevez, M. & Santillán, O. (2016) . About the isocurvature tension between axion and high scale inflationary models. European Physical Journal C, 76(7).
http://dx.doi.org/10.1140/epjc/s10052-016-4226-2
---------- CHICAGO ----------
Estevez, M., Santillán, O. "About the isocurvature tension between axion and high scale inflationary models" . European Physical Journal C 76, no. 7 (2016).
http://dx.doi.org/10.1140/epjc/s10052-016-4226-2
---------- MLA ----------
Estevez, M., Santillán, O. "About the isocurvature tension between axion and high scale inflationary models" . European Physical Journal C, vol. 76, no. 7, 2016.
http://dx.doi.org/10.1140/epjc/s10052-016-4226-2
---------- VANCOUVER ----------
Estevez, M., Santillán, O. About the isocurvature tension between axion and high scale inflationary models. Eur. Phys. J. C. 2016;76(7).
http://dx.doi.org/10.1140/epjc/s10052-016-4226-2