Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phase

Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phase

We point out a subtlety in choosing the radiation gauge (Az=0 combined with the Lorenz gauge) for gauge fields in AdS/QCD for black hole backgrounds. We then demonstrate the effect of this on the momentum-dependence of the spectral functions of the J/ψ vector meson, showing a spreading with momentum...

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Main Authors: David Dudal, Thomas G. Mertens
Format: Article
Language:English
Published: Elsevier 2015-12-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269315008333
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spelling doaj-73294407304446c0a8add716d44f3f6c2020-11-25T00:05:35ZengElsevierPhysics Letters B0370-26931873-24452015-12-01751C35235710.1016/j.physletb.2015.10.074Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phaseDavid Dudal0Thomas G. Mertens1KU Leuven Campus Kortrijk – KULAK, Department of Physics, Etienne Sabbelaan 53, 8500 Kortrijk, BelgiumGhent University, Department of Physics and Astronomy, Krijgslaan 281-S9, 9000 Gent, BelgiumWe point out a subtlety in choosing the radiation gauge (Az=0 combined with the Lorenz gauge) for gauge fields in AdS/QCD for black hole backgrounds. We then demonstrate the effect of this on the momentum-dependence of the spectral functions of the J/ψ vector meson, showing a spreading with momentum and a breaking of isotropy, in contrast to previous results in the literature. We also discuss the dependence on a background magnetic field, following our earlier proposed model.http://www.sciencedirect.com/science/article/pii/S0370269315008333
collection DOAJ
language English
format Article
sources DOAJ
author David Dudal
Thomas G. Mertens
spellingShingle David Dudal
Thomas G. Mertens
Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phase
Physics Letters B
author_facet David Dudal
Thomas G. Mertens
author_sort David Dudal
title Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phase
title_short Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phase
title_full Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phase
title_fullStr Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phase
title_full_unstemmed Radiation Gauge in AdS/QCD: Inadmissibility and implications on spectral functions in the deconfined phase
title_sort radiation gauge in ads/qcd: inadmissibility and implications on spectral functions in the deconfined phase
publisher Elsevier
series Physics Letters B
issn 0370-2693
1873-2445
publishDate 2015-12-01
description We point out a subtlety in choosing the radiation gauge (Az=0 combined with the Lorenz gauge) for gauge fields in AdS/QCD for black hole backgrounds. We then demonstrate the effect of this on the momentum-dependence of the spectral functions of the J/ψ vector meson, showing a spreading with momentum and a breaking of isotropy, in contrast to previous results in the literature. We also discuss the dependence on a background magnetic field, following our earlier proposed model.
url http://www.sciencedirect.com/science/article/pii/S0370269315008333
work_keys_str_mv AT daviddudal radiationgaugeinadsqcdinadmissibilityandimplicationsonspectralfunctionsinthedeconfinedphase
AT thomasgmertens radiationgaugeinadsqcdinadmissibilityandimplicationsonspectralfunctionsinthedeconfinedphase
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