Dynamics of nuclear four- and five-body systems with correlated Gaussian method

We report our recent applications of the correlated Gaussian (CG) method to nuclear four- and five-body systems: (I) Spin-dipole response functions of ⁴He and (II) ¹⁶ O as a ¹²C+n + n + p + p five-body model. The CG is flexible to describe complex few-nucleon dynamics. The above examples actually demonstrate the power of the CG, giving a simultaneous description of both four-nucleon bound and unbound states using a realistic nuclear force, and both shell- and cluster-configurations in the ground and first excited 0⁺ states of ¹⁶O.