Hadronic Spectra and Light-Front Wavefunctions in Holographic QCD

Brodsky, Stanley J. ; de Teramond, Guy F.

Stanford Linear Accelerator Center

关键词: Phenomenology-Hep,Hepph, Hepth;    Schroedinger Equation;    Dimensions;    Amplitudes;    Gluons;   

DOI  :  10.2172/877213
RP-ID  :  SLAC-PUB-11716
RP-ID  :  AC02-76SF00515
RP-ID  :  877213

美国|英语

来源: UNT Digital Library

【 摘 要 】

We show how the string amplitude {Phi}(z) defined on the fifth dimension in AdS{sub 5} space can be precisely mapped to the light-front wavefunctions of hadrons in physical spacetime. We find an exact correspondence between the holographic variable z and an impact variable {zeta}, which represents the measure of transverse separation of the constituents within the hadrons. In addition, we derive effective four dimensional Schroedinger equations for the bound states of massless quarks and gluons which exactly reproduce the AdS/CFT results and give a realistic description of the light-quark meson and baryon spectrum as well as the form factors for spacelike Q{sup 2}. Only one parameter which sets the mass scale, {Lambda}{sub QCD}, is introduced.