Quark mass deformation of holographic massless QCD

Koji Hashimoto, Takayuki Hirayama, Feng Li Lin, Ho Ung Yee

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

We propose several quark mass deformations of the holographic model of massless QCD using the D4/D8/-brane configuration proposed by Sakai and Sugimoto. The deformations are based on introducing additional D4- or D6-branes away from the QCD D4 branes. The idea is similar to extended technicolor theories, where the chiral symmetry breaking by additional D-branes is mediated to QCD to induce non-zero quark masses. In the D-brane picture as well as the holographic dual gravity description, the quark and the pion masses are generated by novel worldsheet instantons with finite area. We also derive the Gell-Mann-Oakes-Renner relation, and find the value of the chiral condensate in the Sakai-Sugimoto model.

Original languageEnglish
Article number089
JournalJournal of High Energy Physics
Volume2008
Issue number7
DOIs
Publication statusPublished - 2008 Jul 1

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quantum chromodynamics
quarks
instantons
condensates
broken symmetry
pions
gravitation
configurations

Keywords

  • AdS-CFT correspondence
  • Gauge-gravity correspondence

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Quark mass deformation of holographic massless QCD. / Hashimoto, Koji; Hirayama, Takayuki; Lin, Feng Li; Yee, Ho Ung.

In: Journal of High Energy Physics, Vol. 2008, No. 7, 089, 01.07.2008.

Research output: Contribution to journalArticle

Hashimoto, Koji ; Hirayama, Takayuki ; Lin, Feng Li ; Yee, Ho Ung. / Quark mass deformation of holographic massless QCD. In: Journal of High Energy Physics. 2008 ; Vol. 2008, No. 7.
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