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Abstract
We present our recent study on ΛN and ΣN (isospin I = 3/2) interactions by measuring Nambu–Bethe–Salpeter wave functions on the Lattice QCD. The lattice QCD calculation is performed by using the Nf = 2 + 1 gauge configurations generated by PACS-CS collaboration together with employing an improved method to obtain potentials in lattice QCD simulations. For the 1S0 channel, the central ΣN (I = 3/2) potential and the central ΛN (1S0) potential are found to be very similar. For the spin triplet (3S1−3D1) channels, the central ΛN(3S1−3D1) potential is attractive while the central ΣN(I = 3/2, 3S1−3D1) potentials is repulsive. Tensor potentials, on the other hand, are rather weak in both ΛN and ΣN(I = 3/2) systems.
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