Research for novel high-density nuclear matter based on kaon condensation -hyperon coexistence

本文研究了在具有多奇异量子数的高密度物质中可能存在的新相，这种新相可能在中子星中实现，也可能通过高能重离子碰撞形成。作为多奇异系统，我们考虑了中子星中重子-重子相互作用的相对论平均场理论，结合描述K介子-重子和K介子-K介子相互作用的非线性有效手征模型，研究了有限核中重子混合的深度束缚多反K介子态和中子星中重子-混合物质中的K介子凝聚相的结构和特征性质。统一理清它们之间的关系。

We study possible existence of novel phases in high-density matter with multi-strangeness quantum numbers.Such phases may be realized in neutron-stars and may be formed through high-energy heavy-ion collisions. As multi-strangeness system, we consider both deeply bound multi-antikaonic states with hyperon-mixing in finite nulcei and kaon-condensed phase in hyperon-mixed matter in neutron stars.On the basis of the relativistic mean-field theory for baryon-baryon interactions, coupled with the nonlinear effective chiral model which describes kaon-baryon and kaon-kaon interactions, we investigate structures and characteristic properties of these two phases, and clarify relations between them in a unified way.