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Exploring improved holographic theories for QCD
| Venue: | Part I”, [ArXiv:0707.1324 |
| Citations: | 115 - 15 self |
BibTeX
@INPROCEEDINGS{Gürsoy_exploringimproved,
author = {U. Gürsoy and E. Kiritsis and F. Nitti},
title = {Exploring improved holographic theories for QCD},
booktitle = {Part I”, [ArXiv:0707.1324},
year = {}
}
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Abstract
Abstract: This paper is a continuation of ArXiv:0707.1324 where improved holographic theories for QCD were set up and explored. Here, the IR confining geometries are classified and analyzed. They all end in a “good ” (repulsive) singularity in the IR. The glueball spectra are gaped and discrete, and they favorably compare to the lattice data. Quite generally, confinement and discrete spectra imply each other. Asymptotically linear glueball masses can also be achieved. Asymptotic mass ratios of various glueballs with different spin also turn out to be universal. Mesons dynamics is implemented via space filling D4 − ¯ D4 brane pairs. The associated tachyon dynamics is analyzed and chiral symmetry breaking is shown. The dynamics of the RR axion is analyzed, and the non-perturbative running of the QCD θ-angle is obtained. It is shown to always vanish in the IR.
Keyphrases
holographic theory glueball spectrum discrete spectrum various glueballs rr axion associated tachyon dynamic asymptotic mass ratio lattice data linear glueball mass non-perturbative running meson dynamic ir confining geometry d4 d4 brane pair different spin qcd angle chiral symmetry breaking
