Programme

P.50 -- Poster, VCTP-49

Date: Friday, 2 August 2024

Time: 08:30 - 10:00

Isospin mixing in the nuclear low-lying resonances

Le Tan Phuc

Institute of Fundamental and Applied Sciences, Duy Tan University

Since its introduction by Heisenberg in 1932 [1], the Isospin concept has proven highly effective in describing nuclear systems. From this concept emerged a new symmetry known as isospin symmetry. However, the influence of the Coulomb field breaks this symmetry, resulting in the mixing of states with different Isospins and thus isospin is no longer a good quantum number. Notably, in the low-lying tail of nuclear giant dipole resonances (GDR), isospin mixing is observed, particularly in the Pygmy dipole resonances (PDR) region. This report examines the variation of PDR concerning temperature and isospin mixing that occurs in this region. [1] W. Heisenberg, Z. Phys. 77, 1 (1932).

Presenter: Le Tan Phuc