The Cornell potential from general geometries in AdS/QCD

We consider the heavy quark–antiquark potential in the AdS/QCD correspondence, focusing in particular on a recently calculated AdS-like metric deformed by back-reaction effects. We find that tuning the long-distance behaviour of the potential leads to a discrepancy at small distances, and discuss ho...

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Bibliographic Details
Published in:Physics letters. B 2007-08, Vol.652 (2-3), p.79-85
Main Author: White, C.D.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Nuclear physics
Physics
The physics of elementary particles and fields
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Summary:We consider the heavy quark–antiquark potential in the AdS/QCD correspondence, focusing in particular on a recently calculated AdS-like metric deformed by back-reaction effects. We find that tuning the long-distance behaviour of the potential leads to a discrepancy at small distances, and discuss how to better constrain AdS/QCD geometries. A systematic comparison of various geometries is presented, based on goodness of fit to lattice data in the quenched approximation. The back-reacted geometry is seen to be phenomenologically favoured over an alternative geometry with the same number of parameters, although it does not perform as well as some other geometries.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2007.07.006