Relativistic dynamics of charmonia in strong magnetic fields

by Mr Liuyuan Wen (USTC, Hefei)

Wednesday May 14, 2025, 9:00 PM → 10:30 PM Asia/Shanghai

Abstract:
Strong magnetic fields, such as those produced in relativistic heavy-ion collisions, profoundly alter the properties of QCD bound states. In this talk, I present a relativistic light-front dynamics study of charmonium systems under extreme magnetic fields using the Basis Light-Front Quantization (BLFQ) framework. By solving the invariant mass squared operator with confinement and one-gluon-exchange interactions, we obtain the mass spectrum and wave functions under varying magnetic fields. We uncover significant spectral modifications, including Zeeman splitting, ηc-J/ψ mixing, and magnetic sub-level degeneracy breaking. Relativistic effects, such as transverse momentum broadening and longitudinal narrowing of wave functions, reveal structural deformations, while parton distribution functions exhibit novel double-hump profiles in excited states. Our results highlight the necessity of a relativistic framework to capture center-of-mass coupling and quantum corrections, which non-relativistic models fail to address. 

 

 

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Zoom Meeting ID: 97633461593
Password: 882982
https://zoom.us/j/97633461593?pwd=4zKFVUZKqMzV7oS5RYI2zYvyU4SJQu.1