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Confront Holographic QCD with Regge Traj...
He, Song...

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Confront Holographic QCD with Regge Trajectories of vectors and axial-vectors by He, Song ( Author )
Lemonjar Open Access
N.A
04-10-2007
We derive the general 5-dimension metric structure of the Dp−Dq system in type II superstring theory, and demonstrate the physical meaning of the parameters characterizing the 5-dimension metric structure of the \textit{holographic} QCD model by relating them to the parameters describing Regge trajectories. By matching the spectra of vector mesons ρ1 with deformed Dp−Dq soft-wall model, we find that the spectra of vector mesons ρ1 can be described very well in the soft-wall D3−Dq model, i.e, AdS5 soft-wall model. We then investigate how well the AdS5 soft-wall model can describe the Regge trajectory of axial-vector mesons a1. We find that the constant component of the 5-dimension mass square of axial-vector mesons plays an efficient role to realize the chiral symmetry breaking in the vacuum, and a small negative z4 correction in the 5-dimension mass square is helpful to realize the chiral symmetry restoration in high excitation states.
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English
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MYR 0.00
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https://arxiv.org/abs/0710.0988
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