Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-01-28
Prog.Theor.Phys.122:427-476,2009
Physics
High Energy Physics
High Energy Physics - Theory
PTPTeX, 56 pages, v2: typos corrected, appendix G added to compute a one-boson exchange potential from a standard field-theore
Scientific paper
10.1143/PTP.122.427
We compute nuclear force in a holographic model of QCD on the basis of a D4-D8 brane configuration in type IIA string theory. Repulsive core of nucleons is quite important in nuclear physics, but its origin has not been well-understood in strongly-coupled QCD. We find that string theory via gauge/string duality deduces this repulsive core at short distance between nucleons. Since baryons in the model are realized as solitons given by Yang-Mills instanton configuration on flavor D8-branes, ADHM construction of two instantons probes well the nucleon interaction at short scale, which provides the nuclear force quantitatively. We obtain, as well as a tensor force, a central force which is strongly repulsive as suggested in experiments and lattice results. In particular, the nucleon-nucleon potential V(r) (as a function of the distance) scales as 1/r^2, which is peculiar to the holographic model. We compare our results with one-boson exchange model using the nucleon-nucleon-meson coupling obtained in our previous paper (arXiv:0806.3122).
Hashimoto Katsumi
Sakai Tadakatsu
Sugimoto Shigeki
No associations
LandOfFree
Nuclear Force from String Theory 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 Nuclear Force from String Theory, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Nuclear Force from String Theory will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-344751