Year: 2013
Type: article
Abstract: We study the medium modifications of baryon properties in nuclear many-body systems, especially in $\ensuremath{\Lambda}$ hypernuclei. The nucleon and the $\ensuremath{\Lambda}$ hyperon are described in the Friedberg-Lee model as nontopological solitons which interact through the self-consistent exchange of scalar and vector mesons. The quark degrees of freedom are explicitly considered in the model, so that the medium effects on baryons could be investigated. It is found that the model can provide reasonable descriptions for nuclear matter, finite nuclei, and $\ensuremath{\Lambda}$ hypernuclei. The present model predicts a significant increase of the baryon radius in nuclear medium.
Source: Physical Review C
Authors: J. S. Liang, H. Shen
Institution: Nankai University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1969044237