Speaker
Description
In this talk, I will discuss the properties of the two-flavor quark-meson diquark model as a low-energy effective model for QCD at finite density.
I will map out the phase diagram in the mu_I-mu_B plane, where mu_I and mu_B are the isospin and baryon chemical potentials, respectively.
I will present results for the speed of sound in two cases a) finite mu_I and mu_B=0, and b) finite mu_B and mu_I=0. In case a), the results compare
favorably to lattice simulations and chiral perturbation theory.
In case b) the speed of sound approaches the conformal limit from above at odds with perturbative calculations. I will discuss the 2SC phase of
QCD and the effects of imposing charge neutrality. Finally, I will show some preliminary results for the mass-radius relations of non-strange
pure quark stars.
