科研之友
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摘要
We provide a calculation of N-body (N >= 3) nucleon interactions at short distances in holographic QCD. In the Sakai-Sugimoto model of large-N(c) massless QCD, N baryons are described by N Yang-Mills instantons in 5 spacetime dimensions. We compute a classical short-distance interaction Hamiltonian for N 't Hooft instantons. This corresponds to N baryons sharing identical classical spins and isospins. We find that genuine N-body nuclear forces turn out to vanish for N >= 3, at leading order. This suggests that classical N-body forces are always suppressed compared with 2-body forces.
- 出版日期2010-5-15
