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...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2015-12-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269315008333 |
| Summary: | 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. |
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| ISSN: | 0370-2693 1873-2445 |