Abstract
The behavior of the scalar σ meson at high density is discussed in the context of the Nambu–Jona-Lasinio model. The decrease of the σ-meson mass with increasing density suggests a softening of the equation of state at high density in most of the relativistic mean-field calculations.
- Received 29 June 1987
DOI:https://doi.org/10.1103/PhysRevLett.59.966
©1987 American Physical Society