Quarks and Compact Stars (QCS)
Oct. 20-22, 2014, KIAA at Peking University, Beijing - P. R. China

A strangeness barrier on strange quark-cluster star surface

Renxin Xu

School of Physics and KIAA, Peking University, Beijing 100871, P. R. China

Abstract: The fundamental strong interaction at low-energy scale is very essential to understand important pieces of the Nature, from nuclei to pulsars, but is still challenging physicists although it is a mathematically well-defined domain. The inner structure of pulsar-like compact stars (or the equation of state of cold matter at supra-nuclear density) is still hotly debated even nearly half a century after the discovery of pulsars. It is conjectured that pulsars could be condensed object of quark clusters via residual color interaction, and such a quark-cluster star distinguishes from conventional both neutron and quark stars. In this talk, we propose a strangeness barrier on a strange quark-cluster star surface, and show possible evidence for the barrier.