Correlations of charge and baryon transport in heavy ion collisions

The structrue of nucleon and the baryon number carrier are fundemental questions not fully understood to date. Ultra-relativistic heavy ion collisions at RHIC energies provide unique oppertunities to deepen our understanding of these questions. The correlations of baryon and charge transport can be used to study the correlations of baryon and flavor of the transported objects in ultra-relativistic heavy ions, thus provide a novel probe of baryon carrier and the inner struture of nucleon. In this talk, I will discuss the correlations of baryon and charge transport in heavy ion collisions and its implication for baryon junction search.