English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

The hadron-quark phase transition in the core of massive neutron stars isstudied with a newly constructed two-phase model. For nuclear matter, anonlinear Walecka type model with general nucleon-meson and meson-mesoncouplings, recently calibrated by Steiner, Hemper and Fischer, is taken. Forquark matter, a modified Polyakov-Nambu--Jona-Lasinio (mPNJL) model, whichgives consistent results with lattice QCD data, is used. Most importantly, weintroduce an isoscalar-vector interaction in the description of quark matter,and we study its influence on the hadron-quark phase transition in the interiorof massive neutron stars. With the constraints of neutron star observations,our calculation shows that the isoscalar-vector interaction between quarks isindispensable if massive hybrids star exist in the universe, and its strengthdetermines the onset density of quark matter, as well as the mass-radiusrelations of hybrid stars. Furthermore, as a connection withheavy-ion-collision experiments we give some discussions about the strength ofisoscalar-vector interaction and its effect on the signals of hadron-quarkphase transition in heavy-ion collisions, in the energy range of the NICA atJINR-Dubna and FAIR at GSI-Darmstadt facilities.

Isoscalar-vector interaction and hybrid quark core in massive neutron stars