Speaker
Prof.
David Blaschke
Description
Since Eugene Wigner was awarded the Nobel prize for his discovery and application of fundamental symmetry principles, particularly in nuclear and elementary particle physics, our understanding of strong interactions within quantum chromodynamics is based more than ever on these concepts.
I will demonstrate how in the absence of solutions for QCD under conditions deep inside compact stars an equation of state can be obtained within a model that is built on the basic symmetries of the QCD Lagrangian, in particularly chiral symmetry and color symmetry. While in the vacuum the chiral symmetries is spontaneously broken, it gets restored at high densities. Color symmetry, however gets broken simultaneously by the formation of colorful diquark condensates. I demonstrate that a strong diquark condensate in cold dense quark matter is essential for supporting the possibility that such states could exist in the recently observed pulsars with masses of 2 $M_sun$. Further consequences of such states for the rotational and cooling evolution of hybrid stars are discussed.
