Skyrmions with holography and hidden local symmetry

Details Skyrmions with holography and hidden local symmetry Skyrmions with holography and hidden local symmetry

2009-01-20

arxiv.org/abs/0901.3080v2

Phys.Rev.D79:126005,2009

Physics

High Energy Physics

High Energy Physics - Theory

7 pages, 7 figures

Scientific paper

10.1103/PhysRevD.79.126005

We study baryons as Skyrmions in holographic QCD with D4/D8/D8-bar multi-D brane system in type IIA superstring theory, and also in the non-linear sigma model with hidden local symmetry (HLS). Comparing these two models, we find that the extra-dimension and its nontrivial curvature can largely change the role of (axial) vector mesons for baryons in four-dimensional space-time. In the HLS approach, the rho-meson field as a massive Yang-Mills field has a singular configuration in Skyrmion, which gives a strong repulsion for the baryon as a stabilizer. When a_1 meson is added in this approach, the stability of Skyrmion is lost by the cancellation of rho and a_1 contributions. On the contrary, in holographic QCD, the rho-meson field does not appear as a massive Yang-Mills field due to the extra-dimension and its nontrivial curvature. We show that the rho-meson field has a regular configuration in Skyrmion, which gives a weak attraction for the baryon in holographic QCD. We argue that Skyrmion with pi, rho and a_1 mesons become stable due to the curved extra-dimension and also the presence of the Skyrme term in holographic QCD. From this result, we also discuss the features of our truncated-resonance analysis on baryon properties with pi and rho mesons below the cutoff scale M_KK about 1GeV in holographic QCD, which is compared with other 5D instanton analysis.

Affiliated with

Also associated with

No associations

Rating

Skyrmions with holography and hidden local symmetry 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 Skyrmions with holography and hidden local symmetry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Skyrmions with holography and hidden local symmetry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-435267