Density dependent effective interactions and recollections of the Rutgers-Princeton years

11th International Spring Seminar on Nuclear Physics: Shell Model and Nuclear Structure – achievements of the past two decades

Kuo, T.T.S.^1

Department of Physics and Astronomy, Stony Brook University, Stony Brook

NY

11794-3800, United States^1

关键词: Density dependent;    Effective interactions;    Empirical density;    Equation of state;    Meson-nucleon couplings;    Nuclear matters;    Skyrme interaction;    Transition density;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/580/1/012027/pdf
DOI  :  10.1088/1742-6596/580/1/012027

来源: IOP

【 摘 要 】

The density-dependent effective interactions given by the new Brown-Rho (new- BR) scalings and chiral three-nucleon force V3N are compared with the empirical density- dependent force of the Skyrme interactions. The new-BR scaling is based on a Skyrmion- half-Skyrmion model where nuclear matter is treated as a Skyrmion matter for density smaller than a transition density n1/2 0.32 fm-3while a half-Skyrmion matter for density greater. In this model, the meson mass, nucleon mass and meson-nucleon coupling are all scaled with density, making the resulting two-nucleon interaction density dependent. By integrating out a participating nucleon over the Fermi sea, Holt, Kaiser and Weise have obtained an effective three-nucleon force 3N which is also a density-dependent two-nucleon interaction. The equation of state for symmetric nuclear matter given by the new-BR-scaled V2N, 3N, and (unscaled-V2N + a Skyrme-type density-dependent force) are all found to be closely similar to each other.