2009/02/28 by Youngman Kim, Sangmin Lee, Piljin Yi · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #hep-th #nucl-th
paper · pdf · doi:10.1088/1126-6708/2009/04/086
published as JHEP 0904:086,2009 · 33 pages, 4 figures, a preprint number added, typos fixed, a reference added, a minor revision in section 5.3
arxiv created 2009/03/09 · openalex publication_date 2009/04/21 · arxiv updated 2010/05/28 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We compute the potential between a pair of nucleons in the D4-D8 holographic QCD. In the large 't Hooft coupling limit, λ≫ 1, the hadronic size of the baryon is small ∼ 1/√λMKK, and their interaction with mesons are well approximated by a set of dimension four and five operators. The nucleon-nucleon potential emerges from one-boson exchange picture involving massless pseudo-scalars and an infinite tower of spin one mesons. We find in particular that ρ meson exchanges are dominated by a dimension five derivative coupling of tensor type, whereas for ω mesons and axial mesons, such tensor couplings are completely absent. The potential is universally repulsive ∼ 1/r2 at short distance, and has the usual long-distance attractive behavior ∼ -1/r3 along a isosinglet and spin triplet channel. Both the large Nc form and the finite Nc form are given. In the former, a shallow classical minimum of depth ∼ 0.1MKKNc/λ forms at around rMKK≃ 5.5.