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arXiv · 1510.05490

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

David Dudal·Thomas G. Mertens
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Abstract

We point out a subtlety in choosing the radiation gauge (A_z=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/psi 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.

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David Dudal, Thomas G. Mertens. 2015-10-27. Radiation Gauge in AdS/QCD: inadmissibility and implications on spectral functions in the deconfined phase. https://doi.org/10.1016/j.physletb.2015.10.074

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