The Holographic Life of the eta'

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dc.creatorBarbon, Jose L. F.
dc.creatorHoyos, Carlos
dc.creatorMateos, David
dc.creatorMyers, Robert C.
dc.date2004-04-30
dc.date2004-12-07
dc.date.accessioned2026-07-07T11:10:16Z
dc.date.available2026-07-07T11:10:16Z
dc.descriptionIn the string holographic dual of large-N_c QCD with N_f flavours of Kruczenski et al, the eta' meson is massless at infinite N_c and dual to a collective fluctuation of N_f D6-brane probes in a supergravity background. Here we identify the string diagrams responsible for the generation of a mass of order N_f/N_c, consistent with the Witten-Veneziano formula, and show that the supregravity limit of these diagrams corresponds to mixings with pseudoscalar glueballs. We argue that the dependence on the theta-angle in the supergravity description occurs only through the combination theta + 2 \sqrt{N_f} eta' / f_pi, as dictated by the U(1) anomaly. We provide a quantitative test by computing the linear term in the eta' potential in two independent ways, with perfect agreement.
dc.description1+26 pages, 8 figures; V4: Appendix added, version published in JHEP
dc.identifierhttps://arxiv.org/abs/hep-th/0404260
dc.identifierhttp://arxiv.org/abs/hep-th/0404260
dc.identifierJHEP0410:029,2004
dc.identifierdoi:10.1088/1126-6708/2004/10/029
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190734
dc.subjectHigh Energy Physics - Theory
dc.subjectHigh Energy Physics - Lattice
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe Holographic Life of the eta'
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