From OPE to chiral perturbation theory in holographic QCD

From OPE to chiral perturbation theory in holographic QCD

The soft wall model in holographic QCD has Regge trajectories but wrong operator product expansion (OPE) for the two-point vectorial QCD Green function. We modify the dilaton potential to comply with the OPE. We study also the axial two-point function using the same modified dilaton field and an add...

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Main Authors: Cappiello Luigi, D’Ambrosio Giancarlo, Greynat David
Format: Article
Language:English
Published: EDP Sciences 2016-01-01
Series:EPJ Web of Conferences
Online Access:http://dx.doi.org/10.1051/epjconf/201612900043
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spelling doaj-c301ce190aa641d4b3ab63e7a7a3c0352021-08-02T02:47:33ZengEDP SciencesEPJ Web of Conferences2100-014X2016-01-011290004310.1051/epjconf/201612900043epjconf_qcd2016_00043From OPE to chiral perturbation theory in holographic QCDCappiello LuigiD’Ambrosio Giancarlo0Greynat DavidINFN-Sezione di NapoliThe soft wall model in holographic QCD has Regge trajectories but wrong operator product expansion (OPE) for the two-point vectorial QCD Green function. We modify the dilaton potential to comply with the OPE. We study also the axial two-point function using the same modified dilaton field and an additional scalar field to address chiral symmetry breaking. OPE is recovered adding a boundary term and low energy chiral parameters, Fπ and L10, are well described analytically by the model in terms of Regge spacing and QCD condensates. The model nicely supports and extends previous theoretical analyses advocating Digamma function to study QCD two-point functions in different momentum regions.http://dx.doi.org/10.1051/epjconf/201612900043
collection DOAJ
language English
format Article
sources DOAJ
author Cappiello Luigi
D’Ambrosio Giancarlo
Greynat David
spellingShingle Cappiello Luigi
D’Ambrosio Giancarlo
Greynat David
From OPE to chiral perturbation theory in holographic QCD
EPJ Web of Conferences
author_facet Cappiello Luigi
D’Ambrosio Giancarlo
Greynat David
author_sort Cappiello Luigi
title From OPE to chiral perturbation theory in holographic QCD
title_short From OPE to chiral perturbation theory in holographic QCD
title_full From OPE to chiral perturbation theory in holographic QCD
title_fullStr From OPE to chiral perturbation theory in holographic QCD
title_full_unstemmed From OPE to chiral perturbation theory in holographic QCD
title_sort from ope to chiral perturbation theory in holographic qcd
publisher EDP Sciences
series EPJ Web of Conferences
issn 2100-014X
publishDate 2016-01-01
description The soft wall model in holographic QCD has Regge trajectories but wrong operator product expansion (OPE) for the two-point vectorial QCD Green function. We modify the dilaton potential to comply with the OPE. We study also the axial two-point function using the same modified dilaton field and an additional scalar field to address chiral symmetry breaking. OPE is recovered adding a boundary term and low energy chiral parameters, Fπ and L10, are well described analytically by the model in terms of Regge spacing and QCD condensates. The model nicely supports and extends previous theoretical analyses advocating Digamma function to study QCD two-point functions in different momentum regions.
url http://dx.doi.org/10.1051/epjconf/201612900043
work_keys_str_mv AT cappielloluigi fromopetochiralperturbationtheoryinholographicqcd
AT dambrosiogiancarlo fromopetochiralperturbationtheoryinholographicqcd
AT greynatdavid fromopetochiralperturbationtheoryinholographicqcd
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