Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-07-23
Eur.Phys.J.A23:365-378,2005
Physics
Nuclear Physics
Nuclear Theory
21 pages, 13 figures
Scientific paper
10.1140/epja/i2004-10085-9
The contribution of Lambda hyperons to neutrino scattering rates is calculated in the random phase approximation in a model where the interaction is described by a Skyrme potential. Finite temperature and neutrino trapping are taken into account in view of applications to the deleptonization stage of protoneutron star cooling. The hyperons can remove the problem of ferromagnetic instability common to (nearly) all Skyrme parametrizations of the nucleon-nucleon interaction. As a consequence, there is not any longer a pole at the transition in the neutrino-baryon cross section. However there still remains an enhancement in this region. In the absence of ferromagnetism the mean free path in npLambda matter is reduced compared to its value in np matter as consequence of the presence of this additional degree of freedom. At high density the results are very sensitive to the choice of the Lambda-Lambda interaction.
No associations
LandOfFree
Neutrino scattering rates in the presence of hyperons from a Skyrme model in the RPA approximation 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 Neutrino scattering rates in the presence of hyperons from a Skyrme model in the RPA approximation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Neutrino scattering rates in the presence of hyperons from a Skyrme model in the RPA approximation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-246509