Dr. Indranil Mazumdar

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Three Body Model for Halo Nuclei and the Efimov Effect.

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The discovery of light neutron rich nuclei near the drip line showing either a pronounced halo of one or two neutrons or a neutron skin of several neutrons have opened up new vistas in contemporary nuclear physics. The first part of this talk will be devoted to an introduction to the discovery of halo nuclei and the global efforts in this direction. We will then introduce the result of our calculations using a three-body model to understand the key structural properties of these nuclei. The 2-neutron halo nuclei are the ideal candidates for studying the Efimov effect in atomic nuclei. In the second part of the talk we will present our work to investigate the occurrence of Efimov states in 2-neutron halo nuclei, like, 14Be, 19B, 20C, 22C. We will also present the result of our calculations to study the evolution of the bound Efimov states into resonances with increasing 2-body (neutron-core) binding energy. Finally, we will tie up the emergence of the asymmmetric resonances with the Fano phenomenon and discuss its implication for the possible experimental observation of Efimov states in the atomic nuclei.