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Perfecting the ultra-violet of holographic descriptions of QCD

Perfecting the ultra-violet of holographic descriptions of QCD
Perfecting the ultra-violet of holographic descriptions of QCD
We investigate imposing a UV cutoff into a simple AdS/QCD model of the rho mesons. The cutoff corresponds to the scale at which QCD moves from perturbative to non-perturbative behaviour, above which the gravity dual will itself become strongly coupled. Simply imposing a cutoff significantly improves the fit to the masses of the tower of excited rho mesons. Formally one should match the couplings of higher dimension operators and the anomalous dimensions of fields to the QCD values at the cutoff. We explore examples of these matchings including looking at the anomalous dimensions of the operators and including a GTrF4 coupling.
0370-2693
546-550
Evans, Nick
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Tedder, Andrew
d809fa3b-086e-42cf-b0fd-a78312f90512
Evans, Nick
33dfbb52-64dd-4c1f-9cd1-074faf2be4b3
Tedder, Andrew
d809fa3b-086e-42cf-b0fd-a78312f90512

Evans, Nick and Tedder, Andrew (2006) Perfecting the ultra-violet of holographic descriptions of QCD. Physics Letters B, 642 (5-6), 546-550. (doi:10.1016/j.physletb.2006.10.019).

Record type: Article

Abstract

We investigate imposing a UV cutoff into a simple AdS/QCD model of the rho mesons. The cutoff corresponds to the scale at which QCD moves from perturbative to non-perturbative behaviour, above which the gravity dual will itself become strongly coupled. Simply imposing a cutoff significantly improves the fit to the masses of the tower of excited rho mesons. Formally one should match the couplings of higher dimension operators and the anomalous dimensions of fields to the QCD values at the cutoff. We explore examples of these matchings including looking at the anomalous dimensions of the operators and including a GTrF4 coupling.

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Published date: 23 November 2006

Identifiers

Local EPrints ID: 57204
URI: https://eprints.soton.ac.uk/id/eprint/57204
ISSN: 0370-2693
PURE UUID: 58af10b6-b3e6-4661-9c9e-0ee4082aa14f

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Date deposited: 14 Aug 2008
Last modified: 13 Mar 2019 20:34

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