Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-02-21
PRD 81,096010 (2010)
Physics
High Energy Physics
High Energy Physics - Phenomenology
32 pages, 7 figures. Final version published in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.81.096010
The light-front holographic mapping of classical gravity in AdS space, modified by a positive-sign dilaton background, leads to a nonperturbative effective coupling $\alpha_s^{AdS}(Q^2)$. It agrees with hadron physics data extracted from different observables, such as the effective charge defined by the Bjorken sum rule, as well as with the predictions of models with built-in confinement and lattice simulations. It also displays a transition from perturbative to nonperturbative conformal regimes at a momentum scale $ \sim 1$ GeV. The resulting $\beta$ function appears to capture the essential characteristics of the full $\beta$ function of QCD, thus giving further support to the application of the gauge/gravity duality to the confining dynamics of strongly coupled QCD. Commensurate scale relations relate observables to each other without scheme or scale ambiguity. In this paper we extrapolate these relations to the nonperturbative domain, thus extending the range of predictions based on $\alpha_s^{AdS}(Q^2)$.
Brodsky Stanley J.
de Teramond Guy F.
Deur Alexandre
No associations
LandOfFree
Nonperturbative QCD Coupling and its $β$ function from Light-Front Holography does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Nonperturbative QCD Coupling and its $β$ function from Light-Front Holography, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nonperturbative QCD Coupling and its $β$ function from Light-Front Holography will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-608180