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 Tools annual

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 monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We investigate systematically the possible deconfinement phase transitionfrom nuclear matter to quark matter in compact stars. The properties of nuclearmatter are fixed by expanding its binding energy to the order of $\rho^3$,while those of quark matter are predicted by an equivparticle model. TheMaxwell construction is then applied for the quark-hadron mixed phase. Byconfronting compact star structures with pulsar observations, we obtain severalEOSs that are compatible with the latest observations while supporting quarkcores inside the most massive stars. It is found that the quark core is rathersmall and does not emerge for compact stars with $M\lesssim 2M_\odot$. Thein-medium quark condensate of the stellar matter in those stars are thenextracted within the framework of an equivparticle model, which decreasesnonlinearly with density. At larger densities with pure quark matter, the quarkcondensate is still large and does not necessary decrease with density,indicating significant nonperturbative contributions within the density regionscovered by compact stars.

Deconfinement phase transition and quark condensate in compact stars