Recent progress on QCD inputs for axion phenomenology

Recent progress on QCD inputs for axion phenomenology

The properties of the QCD axion are strictly related to the dependence of strong interactions on the topological parameter theta. We present a determination of the topological properties of QCD for temperatures up to around 600 MeV, obtained by lattice QCD simulations with 2+1 flavors and physical q...

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Main Authors: Bonati Claudio, D’Elia Massimo, Mariti Marco, Martinelli Guido, Mesiti Michele, Negro Francesco, Sanfilippo Francesco, Villadoro Giovanni
Format: Article
Language:English
Published: EDP Sciences 2017-01-01
Series:EPJ Web of Conferences
Online Access:https://doi.org/10.1051/epjconf/201713708004
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spelling doaj-b0d4f2ec1525424da126f39f55a74b0c2021-08-02T06:56:29ZengEDP SciencesEPJ Web of Conferences2100-014X2017-01-011370800410.1051/epjconf/201713708004epjconf_conf2017_08004Recent progress on QCD inputs for axion phenomenologyBonati ClaudioD’Elia MassimoMariti MarcoMartinelli GuidoMesiti MicheleNegro Francesco0Sanfilippo Francesco1Villadoro Giovanni2NFN sezione di PisaSchool of Physics and Astronomy, University of SouthamptonAbdus Salam International Centre for Theoretical PhysicsThe properties of the QCD axion are strictly related to the dependence of strong interactions on the topological parameter theta. We present a determination of the topological properties of QCD for temperatures up to around 600 MeV, obtained by lattice QCD simulations with 2+1 flavors and physical quark masses. Numerical results for the topological susceptibility, when compared to instanton gas computations, differ both in size and in the temperature dependence. We discuss the implications of such findings for axion phenomenology, also in comparison to similar studies in the literature, and the prospects for future investigations.https://doi.org/10.1051/epjconf/201713708004
collection DOAJ
language English
format Article
sources DOAJ
author Bonati Claudio
D’Elia Massimo
Mariti Marco
Martinelli Guido
Mesiti Michele
Negro Francesco
Sanfilippo Francesco
Villadoro Giovanni
spellingShingle Bonati Claudio
D’Elia Massimo
Mariti Marco
Martinelli Guido
Mesiti Michele
Negro Francesco
Sanfilippo Francesco
Villadoro Giovanni
Recent progress on QCD inputs for axion phenomenology
EPJ Web of Conferences
author_facet Bonati Claudio
D’Elia Massimo
Mariti Marco
Martinelli Guido
Mesiti Michele
Negro Francesco
Sanfilippo Francesco
Villadoro Giovanni
author_sort Bonati Claudio
title Recent progress on QCD inputs for axion phenomenology
title_short Recent progress on QCD inputs for axion phenomenology
title_full Recent progress on QCD inputs for axion phenomenology
title_fullStr Recent progress on QCD inputs for axion phenomenology
title_full_unstemmed Recent progress on QCD inputs for axion phenomenology
title_sort recent progress on qcd inputs for axion phenomenology
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2017-01-01
description The properties of the QCD axion are strictly related to the dependence of strong interactions on the topological parameter theta. We present a determination of the topological properties of QCD for temperatures up to around 600 MeV, obtained by lattice QCD simulations with 2+1 flavors and physical quark masses. Numerical results for the topological susceptibility, when compared to instanton gas computations, differ both in size and in the temperature dependence. We discuss the implications of such findings for axion phenomenology, also in comparison to similar studies in the literature, and the prospects for future investigations.
url https://doi.org/10.1051/epjconf/201713708004
work_keys_str_mv AT bonaticlaudio recentprogressonqcdinputsforaxionphenomenology
AT deliamassimo recentprogressonqcdinputsforaxionphenomenology
AT maritimarco recentprogressonqcdinputsforaxionphenomenology
AT martinelliguido recentprogressonqcdinputsforaxionphenomenology
AT mesitimichele recentprogressonqcdinputsforaxionphenomenology
AT negrofrancesco recentprogressonqcdinputsforaxionphenomenology
AT sanfilippofrancesco recentprogressonqcdinputsforaxionphenomenology
AT villadorogiovanni recentprogressonqcdinputsforaxionphenomenology
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