About the isocurvature tension between axion and high scale inflationary models

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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autor principal: Santillán, Osvaldo Pablo
Publicado: 2016
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v76_n7_p_Estevez
http://hdl.handle.net/20.500.12110/paper_14346044_v76_n7_p_Estevez
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_14346044_v76_n7_p_Estevez
record_format dspace
spelling paper:paper_14346044_v76_n7_p_Estevez2023-06-08T16:15:14Z About the isocurvature tension between axion and high scale inflationary models Santillán, Osvaldo Pablo 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). Fil:Santillán, O. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v76_n7_p_Estevez http://hdl.handle.net/20.500.12110/paper_14346044_v76_n7_p_Estevez
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
description 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).
author Santillán, Osvaldo Pablo
spellingShingle Santillán, Osvaldo Pablo
About the isocurvature tension between axion and high scale inflationary models
author_facet Santillán, Osvaldo Pablo
author_sort Santillán, Osvaldo Pablo
title About the isocurvature tension between axion and high scale inflationary models
title_short About the isocurvature tension between axion and high scale inflationary models
title_full About the isocurvature tension between axion and high scale inflationary models
title_fullStr About the isocurvature tension between axion and high scale inflationary models
title_full_unstemmed About the isocurvature tension between axion and high scale inflationary models
title_sort about the isocurvature tension between axion and high scale inflationary models
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_14346044_v76_n7_p_Estevez
http://hdl.handle.net/20.500.12110/paper_14346044_v76_n7_p_Estevez
work_keys_str_mv AT santillanosvaldopablo abouttheisocurvaturetensionbetweenaxionandhighscaleinflationarymodels
_version_ 1768546689398865920

Ejemplares similares