Equation of state at high densities and modern compact star observations

Details Equation of state at high densities and modern compact star observations Equation of state at high densities and modern compact star observations

2007-08-30

arxiv.org/abs/0708.4216v1

J.Phys.G35:014051,2008

Physics

Nuclear Physics

Nuclear Theory

6 pages, 2 figures, accepted for publication in J. Phys. G. (Special Issue)

Scientific paper

10.1088/0954-3899/35/1/014051

Recently, observations of compact stars have provided new data of high accuracy which put strong constraints on the high-density behaviour of the equation of state of strongly interacting matter otherwise not accessible in terrestrial laboratories. The evidence for neutron stars with high mass (M =2.1 +/- 0.2 M_sun for PSR J0751+1807) and large radii (R > 12 km for RX J1856-3754) rules out soft equations of state and has provoked a debate whether the occurence of quark matter in compact stars can be excluded as well. In this contribution it is shown that modern quantum field theoretical approaches to quark matter including color superconductivity and a vector meanfield allow a microscopic description of hybrid stars which fulfill the new, strong constraints. The deconfinement transition in the resulting stiff hybrid equation of state is weakly first order so that signals of it have to be expected due to specific changes in transport properties governing the rotational and cooling evolution caused by the color superconductivity of quark matter. A similar conclusion holds for the investigation of quark deconfinement in future generations of nucleus-nucleus collision experiments at low temperatures and high baryon densities such as CBM @ FAIR.

Affiliated with

Also associated with

No associations

Rating

Equation of state at high densities and modern compact star observations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Equation of state at high densities and modern compact star observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equation of state at high densities and modern compact star observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-206284