TY - JOUR
T1 - Quark mass deformation of holographic massless QCD
AU - Hashimoto, Koji
AU - Hirayama, Takayuki
AU - Lin, Feng Li
AU - Yee, Ho Ung
PY - 2008/7/1
Y1 - 2008/7/1
N2 - 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.
AB - 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.
KW - AdS-CFT correspondence
KW - Gauge-gravity correspondence
UR - https://www.scopus.com/pages/publications/49749141065
UR - https://www.scopus.com/pages/publications/49749141065#tab=citedBy
U2 - 10.1088/1126-6708/2008/07/089
DO - 10.1088/1126-6708/2008/07/089
M3 - Article
AN - SCOPUS:49749141065
SN - 1126-6708
VL - 2008
JO - Journal of High Energy Physics
JF - Journal of High Energy Physics
IS - 7
M1 - 089
ER -