Alpha-like Correlations in ^20ne, Comparison of Quartetting Wave Function and THSR Approaches

^20 Ne can be considered as a double-magic ^16 O core nucleus surrounded by four nucleons, the constituents of an α -like quartet. Similar to other nuclei ( ^212 Po, ^104 Ti, etc.) with a quartet on top of a double-magic core nucleus, significant α -like correlations are expected. Correlations in the ground state of ^20 Ne are investigated using different approaches. The quartetting wave function approach (QWFA) predicts a large α -like cluster contribution near the surface of the nuclei. The Tohsaki-Horiuchi-Schuck-Röpke (THSR) approach describes α -like clustering in nuclear systems. The results of the QWFA in the Thomas-Fermi and shell-model approximation are compared with THSR calculations for the container model. Results for the α formation probability and the rms radii are shown.