arXiv subjects

Torsten Schürhoff

Publications and source records attributed to Torsten Schürhoff.

2 recordsLinked to original sources

arXiv2014

$Λ$ hyperonic effect on the magnesium dripline

Neutron dripline calculations for both magnesium nuclei and magnesium + $Λ$ hypernuclei have been carried out in a microscopic framework using a chiral effective model. The results are compared with two other relativistic mean field models, SPL-40 and NL3. All three models describe the $Λ$ separation energy of known hypernuclei adequately. The extrapolation to the driplines for moderately heavy hypernuclei are found to be strongly model-dependent.

nucl-th↗

arXiv2010

Neutron stars with small radii -- the role of delta resonances

Recent neutron star observations suggest that the masses and radii of neutron stars may be smaller than previously considered, which would disfavor a purely nucleonic equation of state. In our model, we use a the flavor SU(3) sigma model that includes delta resonances and hyperons in the equation of state. We find that if the coupling of the delta resonances to the vector mesons is slightly smaller than that of the nucleons, we can reproduce both the measured mass-radius relationship and the extrapolated equation of state.

astro-ph.SR↗