Speaker
Nobutoshi Yasutake
(Chiba Institute of Technology)
Description
We investigate the equation of state of neutron-star matter using color–spin molecular dynamics, explicitly incorporating the internal color and spin degrees of freedom of quarks and their dynamical evolution. Flavor conversion processes, including the emergence of strangeness, as well as beta equilibrium, are determined self-consistently through energy minimization. Our results show that, in the interior of stable neutron stars, quark–hadron deconfinement does not occur. Instead, quarks form bound structures, leading to the self-consistent emergence of multi-quark clustering. The resulting cluster-size distribution exhibits pronounced peaks at quark numbers that are integer multiples of three, corresponding to baryonic degrees of freedom.
Author
Nobutoshi Yasutake
(Chiba Institute of Technology)
Co-author
Toshiki Maruyama
(JAEA)