Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2008-03-03
Phys.Rev.D78:086006,2008
Physics
High Energy Physics
High Energy Physics - Theory
30 pages, 1 figure; a footnote added in sec. 4.4, minor corrections
Scientific paper
10.1103/PhysRevD.78.086006
We analyze static properties of nucleons in the two flavor holographic QCD model of Sakai and Sugimoto described effectively by a five-dimensional U(2) Yang-Mills theory with the Chern-Simons term on a curved background. The baryons are represented in this model as a soliton, which at a time slice is approximately the BPST instanton with a fixed size. First, we construct a chiral current in four dimensions from the Noether current of local gauge transformations which are non-vanishing on the boundaries of the extra dimension. We examine this chiral current for nucleons with quantized collective coordinates to compute their charge distribution, charge radii, magnetic moments and axial vector coupling. Most of the results are better close to the experimental values than in the Skyrme model. We discuss the problems of our chiral current; non-uniqueness of the local gauge transformation for defining the current, and its gauge-noninvariance.
Hata Hiroyuki
Murata Masaki
Yamato Shinichiro
No associations
LandOfFree
Chiral currents and static properties of nucleons in holographic QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chiral currents and static properties of nucleons in holographic QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chiral currents and static properties of nucleons in holographic QCD will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-225082