Abstract:
We present calculations of two-pion and
two-kaon correlation
functions in relativistic heavy ion
collisions from a
relativistic transport model that includes
explicitly a
first-order phase transition from a
thermalized quark-gluon
plasma to a hadron gas. We compare the
obtained correlation
radii with recent data from RHIC. The
predicted R_side radii
agree with data while the R_out and R_long
radii are
overestimated. We also address the impact of
in-medium
modifications, for example, a broadening of
the rho-meson,
on the correlation radii. In particular, the
longitudinal
correlation radius R_long is reduced,
improving the
comparison to data.