Cluster Degrees of Freedom in Nuclear Structure and Decay

by Prof. Yibin Qian（钱以斌） (Nanjing University of Science and Technology)

Wednesday 21 Oct 2026, 12:00 → 13:30 Asia/Shanghai

5#/6th-603 - Meeting Room 603 (Science Building)

Abstract:

Cluster phenomena widely exist at various physical levels, from galaxy clusters with filamentary structure at the largest scale to quark clusters confined in hadrons at the smallest scale. The cluster degrees of freedom inside atomic nuclei are also one of the key factors determining nuclear structure properties and dynamical behavior. In recent years, research on cluster structure and cluster phenomena in the light nuclear region has made new progress both experimentally and theoretically, while as the number of nucleons in a nucleus increases, nucleon-nucleon correlations become more complex and lead to an explosive growth in the dimension of the configuration space. How cluster formation and correlations in heavy nuclei and even superheavy nuclei affect their structural properties and reaction mechanisms has naturally become a difficult problem, posing new challenges to experimental observations and existing nuclear theories.
In recent years, we have conducted a series of theoretical studies on how cluster physics influences the structural properties and decay properties of heavier nuclei. This report mainly covers two aspects: first, starting from the extreme two-body cluster model, gradually constructing a heavy-nucleus cluster model that includes core excitation and cluster-state coupling, and trending toward establishing a complete microscopic structure model with cluster degrees of freedom; second, the study of long-lived nucleus alpha decay and early solar system evolution, as well as research progress on 2α decay in nuclei.

Biography:

Qian Yibin, a professor at School of Physics in Nanjing University of Science and Technology. After receiving the Ph.D. from the School of Physics, Nanjing University in 2014, he joined Nanjing University of Science and Technology. From 2017 to 2018, he was a visiting postdoctoral researcher at KTH Royal Institute of Technology, Sweden. He is mainly engaged in theoretical nuclear physics research, focusing on nuclear cluster structure and decay, fundamental properties of nuclei, and symmetry energy constraints. He has published more than 70 papers in academic journals such as PRL/C and PLB, with more than 1,400 citations. He was a recipient of the Jiangsu Province Excellent Young Scientists Fund (2019) and was selected for the Jiangsu Province "333" Talent Project (2022).

Host: Prof. Yu-Min Zhao

Alternative online link：https://meeting.tencent.com/dm/5qJIvmayTSHt

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